Ferroelectrics of charge ordering type and its non-linear response in triangular mixed valence iron oxide

• Project/Area Number: 18340094
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Condensed matter physics I
• Research Institution: Okayama University
• Principal Investigator: IKEDA Naoshi Okayama University, Dept Phys., Professor (00222894)
• Co-Investigator(Kenkyū-buntansha): MORI Shigeo Osaka Prefecture University, Graduate School of Science, Professor (20251613) ; YOSHII Kenji Japan Atomic Energy Agency, Quantum Bean Science Directorate, Researcher (90354985)
• Project Period (FY): 2006 – 2007
• Project Status: Completed (Fiscal Year 2007)
• Budget Amount: ¥15,710,000 (Direct Cost: ¥15,200,000、Indirect Cost: ¥510,000); Fiscal Year 2007: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000); Fiscal Year 2006: ¥13,500,000 (Direct Cost: ¥13,500,000)
• Keywords: RFe2O4 / Electronic Ferroelectricity / Triangular lattice / Chrage Ordering / Charge Frustration / 電子誘電性 / RFe2O4

Research Abstract

We made a research for triangular mixed valence material RFe2O4 which exhibits a polar charge ordering from the frustrated charge interaction. In this two years we had built up an air tight furnace having sample weight measurement system. From the detailed information of the sample weight change during the various heat treatment, we developed couple of method in obtaining fine sample of RFe2O4. During the course of the research we found the various electronic phases and properties for YbFe2O4, RFeCoO4, RFeCuO4 and RGaCuO4 (R.= Yb, Lu)
Recently the ferroelectricity arise from the polar ordering of electrons have got much attention, however the usability for the actual application on the ferroelectric material have still been an open question. For example high electronic conductivity that possibly exist in the correlated electron system may prevent the usual application for the ferroelectrics like as insulator, charge condenser and so on. This report is one of the possibility search for s uch quests. For example in some sample treatment condition can possibly realize a high resistivity states of electronic ferroelectrics. It is also interesting that the sample having less oxygen vacancy shows high activation energy than non-stoichiometric material. It has been explained that the origin of the dielectric dispersion for Rfe_2O_4 is the boundary motion for polar domains. The higher Q value for higher stoichiometric sample indicates that the less oxygen vacant sample has larger charge ordering coherence length. Which realizes lamer scale of the collective electron motion.
We emphasize that such ferroelectricity, defined by the electron distribution, is crucially different from previously known ferroelectrics. The difference in the origin of ferroelectricity may enable the development of a new class of device application in the near future. For example an anomaly report exists in electron microscope observation, which revealed an extremely small ferroelectric domain having a coherent size of 10 nm scale. This is a consistent estimate from the X-ray diffraction experiments. The superlattice profile is wider than the fundamental Bragg spot. Using the Schemer's formula the coherence length was estimated as about 10 nm from the full width of the half maximum of the peak profile in the a-b plane. In this ferroelectric the Coulomb interactions between Fe^<3+> and Fe^<2+> dominate the total energy for the presence of the domain sizes, that is decoupled from the lattice distortion. This indicates a typical property of the ferroelectricity by ordered electrons, free of lattice distortion. Future study may reveal such an extremely small ferroelectric element in high density electric devices in such extremely small domains.
The applicability of electronic ferroelectric material for conventional ferroelectrics is still an open question. We should continue to find out better method to realize high stoichiometric RFe_2O_4, or also we should find out more characteristic application that may suit for such material having electric polarization and good conductivity.

Research Products

• [Journal Article] X-ray magnetic circular dichroism and photoemission studies of ferromagnetism in CaMnl-xRuxO3 thin films (2008)
  • Author(s): K. Terai, K. Yoshii, Y. Takeda, S. I. Fuiimori, Y. Saitoh, K. Ohwada. T, Inami, and T. Okane, M. Arita, K.
  • Journal Title: Phys. Rev. B 77 Pages: 115128-6
  • Description: 「研究成果報告書概要(和文)」より
  • Peer Reviewed
• [Journal Article] 電荷秩序化型誘電体の共鳴散乱 (2008)
  • Author(s): 池田直
  • Journal Title: 機能材料 28 Pages: 76-84
  • Description: 「研究成果報告書概要(和文)」より
  • Peer Reviewed
• [Journal Article] 岡山大学発 新大学院教育 -企業との連携に基づく放射光実習- (2008)
  • Author(s): 原田勲, 池田直, 横谷尚睦
  • Journal Title: 日本放射光学会誌 21 Pages: 20-24
  • NAID: 10019913798
  • Description: 「研究成果報告書概要(和文)」より
  • Peer Reviewed
• [Journal Article] NaV205の逐次電何不均化による悪魔の花-悪魔の花を咲かせるIsingスピンの詳細と競合する相互作用の理解- (2008)
  • Author(s): 大和田謙二, 藤井保彦, 村岡次郎, 中尾裕則, 村上洋一, 野田幸男, 大隅寛幸, 池田直, 菖蒲敬久, 礒部正彦, 上田寛
  • Journal Title: 日本放射光学会誌 21 Pages: 87-96
  • Description: 「研究成果報告書概要(和文)」より
  • Peer Reviewed
• [Journal Article] X-ray magnetic circular dichroism photoemission studies of ferromagnetism in CaMnl-xRuxO3 thin films (2008)
  • Author(s): K., Terai, K., Yoshii, Y., Takeda, S., I., Fujimori, Y., Saitoh, K., Ohwada, T., Inami, T., Okane, M., Arita, K., Shimada, H., Namatame, M., Taniguchi, K., Kobayashi, M., Kobayashi, A., Fujimori
  • Journal Title: Phys., Rev B 77 Pages: 115128-6
  • Description: 「研究成果報告書概要(欧文)」より
• [Journal Article] RXS study on electronic ferroelectrics (2008)
  • Author(s): N., Ikeda
  • Journal Title: KINOU ZAIRYOU 28 Pages: 76-84
  • Description: 「研究成果報告書概要(欧文)」より
• [Journal Article] Education on the graduates school students using SR facility (2008)
  • Author(s): I., Harada, N., Ikeda, T., Yokoya
  • Journal Title: Jpn. J. Synch. Rad., Soc 21 Pages: 20-24
  • Description: 「研究成果報告書概要(欧文)」より
• [Journal Article] Structural relations between two ground states of NaV2O5 under high pressure : A synchrotron x-ray diffraction study (2008)
  • Author(s): Kenji, Ohwada, Yasuhiko, Fujii, Jiro, Muraoka, Hironori, Nakao, Youichi, Murakami, Yukio, Noda, Hiroyuki, Ohsumi, Naoshi Ikeda, Takahisa Shobu, Masahiko Isobe, Yutaka, Ueda
  • Journal Title: Jpn. J. Synch. Rad. Soc 21 Pages: 87-96
  • Description: 「研究成果報告書概要(欧文)」より
• [Journal Article] 岡山大学発新大学院教育-企業との連携に基づく放射光実習- (2008)
  • Author(s): 原田勲, 池田直, 横谷尚睦
  • Journal Title: 日本放射光学会誌 21 Pages: 20-24
  • NAID: 10019913798
  • Peer Reviewed
• [Journal Article] NaV205 の逐次電荷不均化による悪魔の花-悪魔の花を咲かせるIsingスピンの詳細と競合する相互作用の理解- (2008)
  • Author(s): 大和田謙二, 藤井保彦, 村岡次郎, 中尾裕則, 村上洋一, 野田幸男, 大隅寛幸, 池田直, 菖蒲敬久, 礒部正彦, 上田寛
  • Journal Title: 日本放射光学会誌 21 Pages: 87-96
  • Peer Reviewed
• [Journal Article] Ferroelectricity from Valence Ordering in RFe204 (2007)
  • Author(s): Naoshi Ikeda, Shigeo Mori, Keaii Yoshii
  • Journal Title: Ferroelectrics 348 Pages: 38-47
  • Description: 「研究成果報告書概要(和文)」より
  • Peer Reviewed
• [Journal Article] Magnetic and dielectric behavior of TmFe204 and TmFeCu04 (2007)
  • Author(s): K. Yoshii, N. Ikeda, S. Mori
  • Journal Title: J. Mag. Mag. Mat. 310 Pages: 1154-1156
  • Description: 「研究成果報告書概要(和文)」より
  • Peer Reviewed
• [Journal Article] Doping effect on the charge ordering in LuFe204 (2007)
  • Author(s): Y. Matsuo, Y. Horibe, S. Mori, K. Yoshii and N. Ikeda
  • Journal Title: J. Mag. Mag. Mat. 310
  • Description: 「研究成果報告書概要(和文)」より
  • Peer Reviewed
• [Journal Article] Structural properties of amixed valence compound Fe2B04 (2007)
  • Author(s): S. Shimomura, S. Nakamura, N. Ikeda, E. Kaneko, K. Kato and K. Kohn
  • Journal Title: J. Mag. Mag. Mat. 310 Pages: 793-795
  • Description: 「研究成果報告書概要(和文)」より
  • Peer Reviewed
• [Journal Article] Magnetic and dielectric properties of Tb0.5Ca0.5Mn03 (2007)
  • Author(s): Hiramitsu Y, Yoshii K, Yoneda Y Mizuki, Nakamura A, Shimojo Y, Ishii Y, Morii Y, Ikeda N
  • Journal Title: Jpn. J. Appl. Phys. 46 Pages: 7171-7174
  • Description: 「研究成果報告書概要(和文)」より
  • Peer Reviewed
• [Journal Article] Magnetic and Dielectric Properties of RFe204, RFeM04, and RGaCu04 (R=Yb and Lu,M=Co and Cu) (2007)
  • Author(s): K. Yoshii, N. Ikeda, Y. Matsuo, Y. Horibe and S. Mori
  • Journal Title: Phys. Rev. B 76 Pages: 24423-12
  • Description: 「研究成果報告書概要(和文)」より
  • Peer Reviewed
• [Journal Article] Structural relations between two ground states of NaV205 under high pressure: A synchrotron x-ray diffraction study (2007)
  • Author(s): Kenji Ohwada, Yasuhiko Fujii, Jiro Muraoka, Hironori Nakao, Youichi Murakami, Yukio Noda, Hiroyuki Ohsumi, Naoshi Ikeda, Takahisa Shobu, Masahiko Isobe and Yutaka Ueda
  • Journal Title: Phys. Rev. B 76 Pages: 94113-10
  • Description: 「研究成果報告書概要(和文)」より
  • Peer Reviewed
• [Journal Article] Lattice modulation in YMn205 and TbMn205 studied by SR x-ray (2007)
  • Author(s): Y. Noda, H. Kimura, Y. Kamada, Y. Ishikawa, S. kobayashi, Y. Wakabayashi, N. Ikeda and K. Kohn
  • Journal Title: J. Korean Phys. Soc. 51 Pages: 821-831
  • Description: 「研究成果報告書概要(和文)」より
  • Peer Reviewed
• [Journal Article] Structural Phase Transition in Two-Dimensional Crystallites of Organic Dye Molecules Formed on Aqueous Subphases (2007)
  • Author(s): Noritaka Kato, Ichiro Hirosawa, Masugu Sato, Naoshi Ikeda, Ken-Ichi Iimura, Yoshiaki Uesu
  • Journal Title: Ferroelectrics 346 Pages: 162-167
  • NAID: 130004661636
  • Description: 「研究成果報告書概要(和文)」より
  • Peer Reviewed
• [Journal Article] Neutron diffraction and X-ray absorption study of Ag5Pb206 (2007)
  • Author(s): K. Yoshii, M. Mizumaki, K. Kato, T. Uruga, H. Abe, A. Nakamura, Y. Shioojo, Y. Ishii and Y. Morii
  • Journal Title: J. Solid State Chem. 181 Pages: 377-381
  • Description: 「研究成果報告書概要(和文)」より
  • Peer Reviewed
• [Journal Article] Magnetic and dielectric behavior of Magnetic and Dielectric Behavior of the Ruthenium Double Perovskite Oxides R2MRu06 (R=La, Pr and Nd, M=Mg. Co. Ni and Zn (2007)
  • Author(s): K. Yoshii, N. Ikeda, S. Mori, Y. Yooeda, M. Mizumaki, H. Tanida and Naomi Kawamura
  • Journal Title: Trans. Mater. Res. Soc. Jpn. 32[1] Pages: 51-54
  • Description: 「研究成果報告書概要(和文)」より
  • Peer Reviewed
• [Journal Article] Electronic structure and magnetism of CaMnl-xRux03 thin films (2007)
  • Author(s): K. Terai, K, Yoshii, Y. Takeda, S. -i, Fujimori, Y. Saitoh. K. Ohwada, T, Inami, T. Okane, M. Arita, K. Shimada, H. Namatame. M. Taniguchi, K. Kobayashi, M, Kobayashi and A. Fujimori.
  • Journal Title: J. Mag. Mag. Mater 310 Pages: 1070-1072
  • Description: 「研究成果報告書概要(和文)」より
  • Peer Reviewed
• [Journal Article] Soft x-ray magnetic circular dichroism study of Cal-xSrxRu03 across the ferromagnetic quantum phase transition (2007)
  • Author(s): J. Okamoto, T. Okane, Y. Saitoh, K. Terai, S. -I, Fujimori, Y. Muramatsu, K. Yoshii, K. Mamiya, T. Koide, A. Fujimori, Z. Fang, Y. Takeda, and M. Takano
  • Journal Title: Phys. Rev. B 76 Pages: 184441-5
  • Description: 「研究成果報告書概要(和文)」より
  • Peer Reviewed
• [Journal Article] Ferroelectricity from electron ordering (2007)
  • Author(s): N. Ikeda, S. Mori, K. Yoshii and Y. Matsuo
  • Journal Title: Mater. Res. Symp. Proc. 966
  • Description: 「研究成果報告書概要(和文)」より
  • Peer Reviewed
• [Journal Article] Doping effect on the charge ordering in LuFe204 (2007)
  • Author(s): Y. Matsuo, S. Shinohara, S. Mori. K. Yoshii and N. Ikeda
  • Journal Title: Mater. Res. Symp. Proc. 966
  • Description: 「研究成果報告書概要(和文)」より
  • Peer Reviewed
• [Journal Article] Lattice modulation in YMn205 and TbMn205 studied by using synchrotron radiation x-rays (2007)
  • Author(s): Y. Noda, H. Kimura, Y. Kamada, Y. Ishikawa, S. Kobayashi, Y. Wakabayashi, H. Sawa, N, Ikeda and K. Kobn
  • Journal Title: Journal of the Korean Physical Society 51 Pages: 828-831
  • Description: 「研究成果報告書概要(和文)」より
  • Peer Reviewed
• [Journal Article] Nanoscale ferromagnetism in phase-separated manganites (2007)
  • Author(s): S. Mori, Y. Horibe. T. Asaka, Y. Matsui, C. H. Chen and S. W. Cheong
  • Journal Title: J. Mag. Mag. Mater. 310 Pages: 870-872
  • Description: 「研究成果報告書概要(和文)」より
  • Peer Reviewed
• [Journal Article] Observation of magnetic domain structures in La1-xSrxMn03 (2007)
  • Author(s): T. Asaka. S. Mori. Y. Horibe. K. Takenaka. K. Ishizuka. K. Kimoto and Y. Natsui
  • Journal Title: J. Mag. Mag. Mater. 310 Pages: 782-784
  • Description: 「研究成果報告書概要(和文)」より
  • Peer Reviewed
• [Journal Article] Coercivity and nanostructure in magnetic spinel Mg (Mn, Fe) 204 (2007)
  • Author(s): C. L. Zhang. S. Yeo. Y. Horibe. Y. J. Choi. S. Guha. M. Croft. and S.-W. Cheong and S. Mori
  • Journal Title: Appl. Phys. Lett. 90 Pages: 133123-3
  • Description: 「研究成果報告書概要(和文)」より
  • Peer Reviewed
• [Journal Article] Doping Effect on Ferroelectric Microstructure in YMn1-xTix03 (2007)
  • Author(s): S. Mori. J. Tokunaga. Y. Horibe, T. Asada. Y. Koyama and T. Katsufuji
  • Journal Title: Ferroelectrics 348 Pages: 170-176
  • Description: 「研究成果報告書概要(和文)」より
  • Peer Reviewed
• [Journal Article] Magnetic and Ferroelectric Properties of (Bi1-xLax) Fe03 (2007)
  • Author(s): Y. Yoneda, K. Yoshii, and J. Mizuki
  • Journal Title: Ferroelectrics 348 Pages: 33-37
  • Description: 「研究成果報告書概要(和文)」より
  • Peer Reviewed
• [Journal Article] PDF analysis of Bi0.9-xLa0.1TbxFe03 (2007)
  • Author(s): Y. Yoneda, K. Yoshii, H. Saitoh and J. Mizuki
  • Journal Title: Ferroelectrics 355 Pages: 119-124
  • Description: 「研究成果報告書概要(和文)」より
  • Peer Reviewed
• [Journal Article] Ferroelectricity from Valence Ordering in RFe2O4 (2007)
  • Author(s): Naoshi, Ikeda, Shigeo, Mori, Kenji, Yoshii
  • Journal Title: Ferroelectrics 348 Pages: 38-47
  • NAID: 130004661570
  • Description: 「研究成果報告書概要(欧文)」より
• [Journal Article] Magnetic dielectric behavior of TmFe2O4 TmFeCuO4 (2007)
  • Author(s): K., Yoshii, N., Ikeda, S., Mori
  • Journal Title: J. Mag. Mag. Mat 310 Pages: 1154-1156
  • Description: 「研究成果報告書概要(欧文)」より
• [Journal Article] Ikeda Doping effect on the charge ordering in LuFe2O4 (2007)
  • Author(s): Y., Matsuo, Y., Horibe, S., Mori, K., Yoshii, N
  • Journal Title: J. Mag. Mag. Mat 310 Pages: 349-351
  • Description: 「研究成果報告書概要(欧文)」より
• [Journal Article] Structural properties of a mixed valence compound Fe2BO4 (2007)
  • Author(s): S., Shimomura, S., Nakamura, N., Ikeda, E., Kaneko, K., Kato, K., Kohn
  • Journal Title: J. Mag. Mag. Mat 310 Pages: 793-795
  • Description: 「研究成果報告書概要(欧文)」より
• [Journal Article] Magnetic and dielectric properties of Tb0.5Ca0.5Mn03 (2007)
  • Author(s): Hiramitsu, Y., Yoshii, K., Yoneda, Y., Mizuki, Nakamura, A., Shimojo, Y., Ishii, Y., Morii, Y., Ikeda, N
  • Journal Title: Jpn. J. Appl. Phys 46 Pages: 7171-7174
  • Description: 「研究成果報告書概要(欧文)」より
• [Journal Article] Magnetic and Dielectric Properties of RFe2O4, RFeMO4, and RGaCuO4 (R=Yb and Lu, M=Co and Cu) (2007)
  • Author(s): K., Yoshii, N., Ikeda, Y., Matsuo, Y., Horibe, S., Mori
  • Journal Title: Phys Rev B 76 Pages: 24423-12
  • Description: 「研究成果報告書概要(欧文)」より
• [Journal Article] Structural relations between two ground states of NaV2O5 under high pressure : A synchrotron x-ray diffraction study (2007)
  • Author(s): Kenji, Ohwada, Yasuhiko, Fujii, Jiro, Muraoka, Hironori, Nakao, Youichi, Murakami, Yukio, Noda, Hiroyuki, Ohsumi, Naoshi Ikeda, Takahisa, Shobu, Masahiko, Isobe, Yutaka, Ueda
  • Journal Title: Phys. Rev B 76 Pages: 94113-10
  • Description: 「研究成果報告書概要(欧文)」より
• [Journal Article] Lattice modulation in YMn2O5 TbMn2O5 studied by SR x-ray J. Korean (2007)
  • Author(s): Y., Noda, H., Kimura, Y., Kamada, Y., Ishikawa, S., kobayashi, Y., Wakabayashi, N., Ikeda, K., Kohn
  • Journal Title: Phys. Soc 51 Pages: 821-831
  • Description: 「研究成果報告書概要(欧文)」より
• [Journal Article] Structural Phase Transition in Two-Dimensional Crystallites of Organic Dye Molecules Formed on Aqueous Subphases (2007)
  • Author(s): Noritaka, Kato, Ichiro, Hirosawa, Masugu, Sato, Naoshi, Ikeda, Ken-Ichi, Iimura, Yoshiaki, Uesu
  • Journal Title: Ferroelectrics 346 Pages: 162-167
  • NAID: 130004661636
  • Description: 「研究成果報告書概要(欧文)」より
• [Journal Article] Morii Neutron diffraction and X-ray absorption study of Ag5Pb2O6 (2007)
  • Author(s): K., Yoshii, M., Mizumaki, K., Kato, T., Uruga, H., Abe, A., Nakamura, Y., Shimojo, Y., Ishii, Y
  • Journal Title: J. Solid State Chem 181 Pages: 377-381
  • Description: 「研究成果報告書概要(欧文)」より
• [Journal Article] Magnetic and dielectric behavior of Magnetic and Dielectric Behavior of the Ruthenium Double Perovskite (2007)
  • Author(s): K., Yoshii, N., Ikeda, S., Mori, Y., Yoneda, M., Mizumaki, H., Tanida, Naomi Kawamura
  • Journal Title: Oxides R2MRuO6 (R=La, Pr and Nd, M=Mg, Co, Ni and Zn Trans., Mater., Res., Soc., Jpn 32(1) Pages: 51-54
  • Description: 「研究成果報告書概要(欧文)」より
• [Journal Article] Magnetic and Dielectric Properties of Rare-Earth Iron and Manganese Oxide Systems (2007)
  • Author(s): K., Yoshii, N., Ikeda
  • Journal Title: Focus on Solid State Chemistry (Ed., by Arte M., Newman) Pages: 63-75
  • Description: 「研究成果報告書概要(欧文)」より
• [Journal Article] Electronic structure and magnetism of CaMnl-xRuxO3 thin films (2007)
  • Author(s): K., Terai, K., Yoshii, Y., Takeda, S,-i., Fujimori, Y., Saitoh, K., Ohwada, T., Inami, T., Okane, M., Arita, K., Shimada, H., Namatame, M., Taniguchi, K., Kobayashi, M., Kobayashi, A., Fujimori
  • Journal Title: J. Mag. Mag. Mater 310 Pages: 1070-1072
  • Description: 「研究成果報告書概要(欧文)」より
• [Journal Article] Soft x-ray magnetic circular dichroism study of Cal-xSrxRuO3 across the ferromagnetic quantum phase transition (2007)
  • Author(s): J., Okamoto, T., Okane, Y., Saitoh, K., Terai, S.,-I., Fujimori, Y., Muramatsu, K.,Yoshii, K., Mamiya, T., Koide, A., Fujimori, Z., Fang, Y., Takeda, M., Takano
  • Journal Title: Phys. Rev B 76 Pages: 184441-5
  • Description: 「研究成果報告書概要(欧文)」より
• [Journal Article] Ferroelectricity from electron ordering (2007)
  • Author(s): N., Ikeda, S., Mori, K., Yoshii, Y., Matsuo
  • Journal Title: Mater. Res. Symp. Proc 966
  • Description: 「研究成果報告書概要(欧文)」より
• [Journal Article] Doping effect on the charge ordering in LuFe2O4 (2007)
  • Author(s): Y., Matsuo, S., Shinohara, S., Mori, K., Yoshii, N.,Ikeda
  • Journal Title: Mater. Res. Symp. Proc 966
  • Description: 「研究成果報告書概要(欧文)」より
• [Journal Article] Lattice modulation in YMn2O5 TbMn2O5 studied by using synchrotron radiation x-rays (2007)
  • Author(s): Y., Noda, H., Kimura, Y., Kamada, Y., Ishikawa, S., Kobayashi, Y., Wakabayashi, H., Sawa, N., Ikeda, K., Kohn
  • Journal Title: Journal of the Korean Physical Society 51 Pages: 828-831
  • Description: 「研究成果報告書概要(欧文)」より
• [Journal Article] Nanoscale ferromagnetism in phase-separated manganites (2007)
  • Author(s): S., Mori, Y., Horibe, T., Asaka, Y., Matsui, C.,H., Chen, S.,W., Cheong
  • Journal Title: J. Mag. Mag. Mater 310 Pages: 870-872
  • Description: 「研究成果報告書概要(欧文)」より
• [Journal Article] Observation of magnetic domain structures in Lal-xSrxMnO3 (2007)
  • Author(s): T., Asaka, S., Mori, Y., Horibe, K., Takenaka, K., Ishizuka, K., Kimoto Y., Matsui
  • Journal Title: J. Mag. Mag. Mater 310 Pages: 782-784
  • Description: 「研究成果報告書概要(欧文)」より
• [Journal Article] Coercivity nanostructure in magnetic spinet Mg(Mn,Fe)2O4 (2007)
  • Author(s): C., L., Zhang, S., Yeo, Y., Horibe, Y., J., Choi, S., Guha, M., Croft, S.-W., Cheong, S., Mori
  • Journal Title: Appl. Phys. Lett 90 Pages: 133123-3
  • Description: 「研究成果報告書概要(欧文)」より
• [Journal Article] Doping Effect on Ferroelectric Microstructure in YMnI-xTixO3 (2007)
  • Author(s): S., Mori, J., Tokunaga, Y., Horibe, T., Asada, Y., Koyama, T., Katsufuji
  • Journal Title: Ferroelectrics 348 Pages: 170-176
  • Description: 「研究成果報告書概要(欧文)」より
• [Journal Article] Magnetic and Ferroelectric Properties of (Bil-xLax)Fe03 (2007)
  • Author(s): Y., Yoneda, K., Yoshii, J., Mizuki
  • Journal Title: Ferroelectrics 348 Pages: 33-37
  • Description: 「研究成果報告書概要(欧文)」より
• [Journal Article] PDF analysis of BiO.9-xLa0.1TbxFeO3 (2007)
  • Author(s): Y., Yoneda, K., Yoshii, H., Saitoh, J., Mizuki
  • Journal Title: Ferroelectrics 355 Pages: 119-124
  • Description: 「研究成果報告書概要(欧文)」より
• [Journal Article] Ferroelectricity from Valence Ordering in RFe204 (2007)
  • Author(s): Naoshi Ikeda, Shigeo Mori, Kenji Yoshii
  • Journal Title: Ferroelectrics 348 Pages: 38-47
  • Peer Reviewed
• [Journal Article] Structural properties of a mixed valence compound Fe2B04 (2007)
  • Author(s): S. Shimomura, S. Nakamura, N. Ikeda, E. Kaneko, K. Kato and K. Kohn
  • Journal Title: J. Mag. Mag. Mat. 310 Pages: 793-795
  • Peer Reviewed
• [Journal Article] Magnetic and dielectric properties of Tb0.5Ca0.5Mn03 (2007)
  • Author(s): Hiramitsu Y. Yoshii K, Yoneda Y Mizuki, Nakamura A. Shimojo Y, Ishii Y, Morii Y, Ikeda N
  • Journal Title: Jpn. J. Appl. Phys. 46 Pages: 7171-7174
  • Peer Reviewed
• [Journal Article] Magnetic and Dielectric Properties of RFe204, RFeM04, and RGaCu04 (R=Yb and Lu, M=Co and Cu) (2007)
  • Author(s): K. Yoshii, N. Ikeda, Y. Matsuo, Y. Horibe and S. Mori
  • Journal Title: Phys. Rev. B 76
  • Peer Reviewed
• [Journal Article] Structural relations between two ground states of NaV205 under high pressure: A synchrotron x-ray diffraction study (2007)
  • Author(s): Kenji Ohwada, Yasuhiko Fujii. Jiro Muraoka, Hironori Nakao, Youichi Murakami. Yukio Noda, Hiroyuki Ohsumi, Naoshi Ikeda, Takahisa Shobu, Masahiko Isobe and Yutaka Ueda
  • Journal Title: Phys. Rev. B 76
  • Peer Reviewed
• [Journal Article] Lattice modulation in YMn205 and TbMn205 studied by SR x-ray (2007)
  • Author(s): Y. Noda, H. Kimura, Y. Kamada, Y, Ishikawa. S. kobayashi, Y. Wakabayashi. N. Ikeda and K. Kohn
  • Journal Title: J. Korean Phys. Soc. 51 Pages: 821-831
  • Peer Reviewed
• [Journal Article] Magnetic and dielectric behavior of TmFe_2O_4 and TmFeCuO_4 (2007)
  • Author(s): K.Yoshii, N.Ikeda, S.Mori
  • Journal Title: J.Magn.Magn.Mat 310 Pages: 1154-1154
• [Journal Article] Ba2U207: A canted ferromagnet with double-perovskite related orthorhombic structure (2006)
  • Author(s): A. Nakamura and K. Yoshii
  • Journal Title: Physica B 378-380 Pages: 548-549
  • Description: 「研究成果報告書概要(和文)」より
  • Peer Reviewed
• [Journal Article] XAS and MCD studies in Laves compounds with multi-magnetic phase transitions (2006)
  • Author(s): M. Mizumaki, K. Yoshii, N. Kawamura, Y. Watanabe and S. Nanao
  • Journal Title: Phys. Stat. Sol. (c) 3 Pages: 2762-2766
  • Description: 「研究成果報告書概要(和文)」より
  • Peer Reviewed
• [Journal Article] X-ray and neutron transparent pulse magnets (2006)
  • Author(s): E. Ohmichi, N. Ikeda, Y. Nogami and T Osada
  • Journal Title: J. Phys.: Conf. Ser. 51 Pages: 498-501
  • Description: 「研究成果報告書概要(和文)」より
  • Peer Reviewed
• [Journal Article] Conduction characteristics of charge ordering type ferroelectrics YFe204 (2006)
  • Author(s): K. Imamura, Y. Horibe, T. Yoshimura, N. Fujimura, S. Mori and N. Ikeda
  • Journal Title: Materials Research Society Symposium Proceedings 966 Pages: 210-216
  • Description: 「研究成果報告書概要(和文)」より
  • Peer Reviewed
• [Journal Article] Relation between ferroelectric and antiferromagnetic order in RMn205 (2006)
  • Author(s): Y. Noda, H. Kimura, Y. Kameda, T. Osawa, Y. Fukuda, Y. Ishikawa, S. Kobayashi, Y. Wakabayashi, H. Sawa, N. Ikeda and K. Kohn
  • Journal Title: Physica B 385-386 Pages: 119-122
  • Description: 「研究成果報告書概要(和文)」より
  • Peer Reviewed
• [Journal Article] Solid state self-assembly of nanocheckerboards (2006)
  • Author(s): S. Yeo, Y. Horibe and S. Mori, C. M. Tseng and C. H. Chen
  • Journal Title: Appl. Phys. Lett. 89 Pages: 233120-3
  • Description: 「研究成果報告書概要(和文)」より
  • Peer Reviewed
• [Journal Article] Spontaneous formation of vanadium "molecules" in a geometrically frustrated compound: AIV204 (2006)
  • Author(s): Y. Horibe, M. Shingu, K. Kurushima, H. Ishibashi, N. Ikeda, K. Kato, Y. Motome, N. Furukawa, S. Mori and T. Katsufuji
  • Journal Title: Phys. Rev. Lett 96 Pages: 86406-4
  • Description: 「研究成果報告書概要(和文)」より
  • Peer Reviewed
• [Journal Article] Resonant X-ray Scattering Study at Y K-edge in Y1-xCaxTi03 (2006)
  • Author(s): Hironori Nakao, Soukichi Kodama, Kouhei Kiyoto, Youichi Murakami, Masami Tsubota, Fumitoshi Iga, Kazuyuki
  • Journal Title: J. Phys. Soc. Jpn 75 Pages: 94706-5
  • Description: 「研究成果報告書概要(和文)」より
  • Peer Reviewed
• [Journal Article] Magnetic and dielectric properties of frustrated ferrimagnet TmFe204 (2006)
  • Author(s): K. Yoshii, N. Ikeda and A. Nakamura
  • Journal Title: Physica B 378-80 Pages: 585-586
  • Description: 「研究成果報告書概要(和文)」より
  • Peer Reviewed
• [Journal Article] Magnetic and dielectric properties of the ruthenium double perovskites La2MRu06 (M=Mg, Co, Ni and Zn) (2006)
  • Author(s): Kenji Yoshii, Naoshi Ikeda and Masaichiro Mizumaki
  • Journal Title: Phys. Stat. Sol. (a) 203 Pages: 2812-2817
  • Description: 「研究成果報告書概要(和文)」より
  • Peer Reviewed
• [Journal Article] Direct Determination of Low-Dimensional Structures: Synchrotron X-ray Scattering on One-Dimensional Charge-Ordered MMX-Chain Complexes (2006)
  • Author(s): Yusuke Wakabayashi, Atsushi Kobayashi, Hiroshi Sawa, Hiroyuki Ohsumi, Naoshi Ikeda, Hiroshi Kitagawa
  • Journal Title: J. Am. Chem. Soc. 128 Pages: 6676-6682
  • Description: 「研究成果報告書概要(和文)」より
  • Peer Reviewed
• [Journal Article] Ba2U2O7 : A canted ferromagnet with double-perovskite related orthorhombic structure (2006)
  • Author(s): A., Nakamura, K., Yoshii
  • Journal Title: Physica B 378-380 Pages: 548-549
  • Description: 「研究成果報告書概要(欧文)」より
• [Journal Article] XAS and MCD studies in Laves compounds with multi-magnetic phase transitions (2006)
  • Author(s): M., Mizumaki, K., Yoshii, N., Kawamura, Y., Watanabe S., Nanao
  • Journal Title: Phys. Stat. Sol (c) 3 Pages: 2762-2766
  • Description: 「研究成果報告書概要(欧文)」より
• [Journal Article] X-ray and neutron transparent pulse magnets (2006)
  • Author(s): E., Ohmichi, N., Ikeda, Y., Nogami, T., Osada
  • Journal Title: J. Phys. : Conf. Ser 51 Pages: 498-501
  • Description: 「研究成果報告書概要(欧文)」より
• [Journal Article] Conduction characteristics of charge ordering type ferroelectrics YFe2O4 (2006)
  • Author(s): K., Imamura, Y., Horibe, T., Yoshimura, N., Fujimura, S., Mori, N., Ikeda
  • Journal Title: Materials Research Society Symposium Proceedings 96 Pages: 210-216
  • Description: 「研究成果報告書概要(欧文)」より
• [Journal Article] Relation between ferroelectric and antiferromagnetic order in RMn2O5 (2006)
  • Author(s): Y., Noda, H., Kimura, Y., Kamada, T., Osawa, Y., Fukuda, Y., Ishikawa, S., Kobayashi, Y., Wakabayashi, H., Sawa, N., Ikeda K., Kohn
  • Journal Title: Physica B 385-386 Pages: 119-122
  • Description: 「研究成果報告書概要(欧文)」より
• [Journal Article] Solid state self-assembly of nanocheckerboards (2006)
  • Author(s): S., Yeo, Y., Horibe, S., Mori, C., M., Tseng, C., H., Chen
  • Journal Title: J. Appl. Phys 99 Pages: 233120-3
  • Description: 「研究成果報告書概要(欧文)」より
• [Journal Article] Spontaneous formation of vanadium "molecules" in a geometrically frustrated compound : A1V204" (2006)
  • Author(s): Y., Horibe, M., Shingu, K., Kurushima, H., Ishibashi, N., Ikeda, K., Kato, Y., Motome, N., Furukawa, S., Mod, T., Katsufuji
  • Journal Title: Phys., Rev., Lett 96 Pages: 86406-4
  • Description: 「研究成果報告書概要(欧文)」より
• [Journal Article] Resonant X-ray Scattering Study at Y K-edge in YI-xCaxTiO3 (2006)
  • Author(s): Hironori, Nakao, Soukichi, Kodama, Kouhei, Kiyoto, Youichi, Murakami, Masami, Tsubota, Fumitoshi, Iga, Kazuyuki Uchihira, Toshiro Takabatake, Hiroyuki Ohsumi, Masaichiro Mizumaki, Naoshi, Ikeda
  • Journal Title: J. Phys. Soc. Jpn 75 Pages: 94706-5
  • Description: 「研究成果報告書概要(欧文)」より
• [Journal Article] Magnetic and dielectric properties of frustrated ferrimagnet TmFe2O4 (2006)
  • Author(s): K., Yoshii, N., Ikeda, A., Nakamura
  • Journal Title: Physica B 378-80 Pages: 585-586
  • Description: 「研究成果報告書概要(欧文)」より
• [Journal Article] Magnetic and dielectric properties of the ruthenium double perovskites La2MRu06 (M = Mg, Co, Ni and Zn) (2006)
  • Author(s): Kenji, Yoshii, Naoshi, Ikeda, Masaichiro, Mizumaki
  • Journal Title: Phys. Stat. Sol. (a) 203 Pages: 2812-2817
  • Description: 「研究成果報告書概要(欧文)」より
• [Journal Article] Direct Determination of Low-Dimensional Structures : Synchrotron X-ray Scattering on One-Dimensional Charge-Ordered MMX-Chain Complexes (2006)
  • Author(s): Yusuke, Wakabayashi, Atsushi, Kobayashi, Hiroshi, Sawa, Hiroyuki, Ohsumi, Naoshi, Ikeda, Hiroshi, Kitagawa
  • Journal Title: J. Am. Chem. Soc 128 Pages: 6676-6682
  • Description: 「研究成果報告書概要(欧文)」より
• [Journal Article] Spontaneous formation of vanadium "molecules" in a geometrically frustrated compound : AlV_2O_4 (2006)
  • Author(s): Y.Horibe, M.Shingu, K.Kurushima, H.Ishibashi, N.Ikeda, K.Kato, Y.Motome, N.Furukawa, S.Mori, T.Katsufuji
  • Journal Title: Phys.Rev.Lett 96 Pages: 86406-86406
• [Journal Article] Resonant X-ray Scattering Study at Y K-edge in Y_<l-x>Ca_xTiO_3 (2006)
  • Author(s): Hironori Nakao, Soukichi Kodama, Kouhei Kiyoto, Youichi Murakami, Masami Tsubota, Fumitoshi Iga, Kazuyuki Uchihira, Toshiro Takabatake, Hiroyuki Ohsumi, Masaichiro Mizumaki, Naoshi Ikeda
  • Journal Title: J.Phys.Soc.Jpn 75 Pages: 94706-94706
• [Journal Article] Magnetic and dielectric properties of frustrated ferrimagnet TmFe_2O_4 (2006)
  • Author(s): K.Yoshii, N.Ikeda, A.Nakamura
  • Journal Title: Physica B 378-80 Pages: 585-585
• [Journal Article] Magnetic and dielectric properties of the ruthenium double perovskites La_2MRuO_6 (M=Mg,Co,Ni and Zn) (2006)
  • Author(s): Kenji Yoshii, Naoshi Ikeda, Masaichiro Mizumaki
  • Journal Title: Phys.Stat.Sol.(a) 203 Pages: 2812-2812
• [Journal Article] Direct Determination of Low-Dimensional Structures : Synchrotron X-ray Scattering on One-Dimensional Charge-Ordered MMX-Chain Complexes (2006)
  • Author(s): Yusuke Wakabayashi, Atsushi Kobayashi, Hiroshi Sawa, Hiroyuki Ohsumi, Naoshi Ikeda, Hiroshi Kitagawa
  • Journal Title: J.Am.Chem.Soc. 128 Pages: 6676-6676
• [Journal Article] Magnetic and Dielectric Properties of Rare-Earth Iron and Manganese Oxide Systems
  • Author(s): K. Yoshii and N. Ikeda
  • Journal Title: Focus on Solid State Chemistry (Ed. by Arte M. Newman), 2007 Pages: 63-75
  • Description: 「研究成果報告書概要(和文)」より
  • Peer Reviewed
• [Journal Article] Ferroelectricity from Electron Ordering
  • Author(s): Naoshi Ikeda, Shigeo Mori, Kenji Yoshii
  • Journal Title: MRS Symposium proceedings (in press)
• [Journal Article] Electrical Conduction Properties Of Charge Ordering Type Ferroelectrics YFe_2O_4
  • Author(s): K.Imamura, Y.Horibe, T.Yoshimura, N.Fujimura, S.Mori, N.Ikeda
  • Journal Title: MRS Symposium proceedings (in press)
• [Journal Article] Ferroelectricity from Valence Ordering in RFe_2O_4
  • Author(s): Naoshi Ikeda, Shigeo Mori, Kenji Yoshii
  • Journal Title: Ferroelectrics (in press)
• [Journal Article] Structural Phase Transition in Two-Dimensional Crystallites of Organic Dye Molecules Formed on Aqueous Subphases
  • Author(s): Noritaka Kato, Hirosawa Ichiro, Masugu Sato, Naoshi Ikeda, Ken-ichi Iimura, Yoshiaki Uesu
  • Journal Title: Ferroelectrics (in press)
  • NAID: 130004661636
• [Journal Article] Electrical Conduction Properties of Charge Ordering Type Ferroelectrics YFe_2O_4
  • Author(s): Ken Imamura, Yoichi Horibe, Takeshi Yoshimura, Norifumi Fujimura, Shigeo Mori, Naoshi Ikeda
  • Journal Title: J.Korean Phys.Soc (in press)
• [Journal Article] Lattice modulation in YMn_2O_5 and TbMn_2O_5 studied by SR x-ray
  • Author(s): Y.Noda, H.Kimura, Y.Kamada, Y.Ishikawa, S.Kobayashi, Y.Wakabayashi, N.Ikeda, K.Kohn
  • Journal Title: J.Korean Phys.Soc. (in press)
• [Journal Article] Magnetic ordering process in the charge-frustrated ferroelectric system LuFe_2O_4
  • Author(s): Magnetic ordering process in the charge-frustrated ferroelectric system LuFe_2O_4
  • Journal Title: J.Magn.Magn.Mat. (in press)
• [Journal Article] Structural Properties of Mixed-ValentIron Borate Fe_2BO_4
  • Author(s): S.Shimomura, S.Nakamura, N.Ikeda, E.Kaneko, K.Kato, K.Kohn
  • Journal Title: J.Magn.Magn.Mat. (in press)
• [Journal Article] Doping effect on charge ordering and magnetism in triangle lattice system LuFe_2O_4
  • Author(s): Y.Matsuo, Y.Horibe, S.Mori, K.Yoshii, N.Ikeda
  • Journal Title: J.Magn.Magn.Mat. (in press)
• [Journal Article] Development of X-ray analysis method for topological crystals
  • Author(s): K.Yamamoto, T.Ito, N.Ikeda, S.Horita, N.Irie, Y.Nogami, T.Tsuneta, S.Tanda
  • Journal Title: Topology in Ordered Phase (in press)
• [Journal Article] Structure analysis of topological crystal using synchrotron radiation
  • Author(s): Y.Nogami, T.Tsuneta, K.Yamamoto, N.Ikeda, T.Ito, N.Irie, S.Tanda
  • Journal Title: Topology in Ordered Phase (in press)
• [Presentation] Electric Field response of RFe204 (2008)
  • Author(s): N., Ikeda, T., Michiuchi, Y., Yokota, S., Mori, K., Yoshii
  • Organizer: Annual meeting of Japan Physical Society
  • Place of Presentation: Hokkaido Univ
  • Year and Date: 2008-09-24
  • Description: 「研究成果報告書概要(欧文)」より
• [Presentation] 3d-electronic states of Fe2+ and Fe3+ in RFe204 (2008)
  • Author(s): A., Agui, M., Morimoto, T., Uozumi, Tanle Kmber
  • Organizer: Annual meeting of Japan Physical Society
  • Place of Presentation: Hokkaido Univ
  • Year and Date: 2008-09-24
  • Description: 「研究成果報告書概要(欧文)」より
• [Presentation] Current dependence of the energy Gap for θ-(BEDT-TTF)2CsM(SCN)4 (2008)
  • Author(s): I., Terasaki,B., Sawano, T., Suko,S., Tasaki, H., Mori, T., Mori, Y., Nogami, N., Ikeda, M., Watanabe., Y., Noda
  • Organizer: Annual meeting of Japan Physical Society
  • Place of Presentation: Hokkaido Univ
  • Year and Date: 2008-09-22
  • Description: 「研究成果報告書概要(欧文)」より
• [Presentation] Ikeda Charge Ordering and Structure Phase Transition in RFe204 (2) (2008)
  • Author(s): Y., Matsuo, S., Shinohara, S., Mori, K., Yoshii, N
  • Organizer: Annual meeting of Japan Physical Society
  • Place of Presentation: Hokkaido Univ
  • Year and Date: 2008-09-22
  • Description: 「研究成果報告書概要(欧文)」より
• [Presentation] Time resolved 2-Dimensional diffraction study ofθ-(BEDT-TTF)2CsZn(SCN)4 under current flow (2008)
  • Author(s): M., Watanabe, K., Yamamoto, T., Ito, N., Hanasaki, N., Ikeda, Y., Nogami, H., Toyokawa, Y., Noda, T., Inada, T., Suko, I., Terasaki, K., Mori
  • Organizer: Annual meeting of Japan Physical Society
  • Place of Presentation: Hokkaido Univ
  • Year and Date: 2008-09-21
  • Description: 「研究成果報告書概要(欧文)」より
• [Presentation] Distortion analysis of topological crystal in TaSe3 (2008)
  • Author(s): K., Yamamoto, T., Matsuura, S., Ta, T., Ito, S., Horita, N., Ikeda, Y.,Nogami
  • Organizer: Meeting of Japan Physical Society
  • Place of Presentation: Kagoshima Univ
  • Year and Date: 2008-03-19
  • Description: 「研究成果報告書概要(欧文)」より
• [Presentation] Structure Phase Transition in YFe204 (2008)
  • Author(s): S., Shinohara,Y., Matsuo, S., Mori, Y., Horibe, K., Yoshii, N., Ikeda
  • Organizer: Meeting of Japan Physical Society
  • Place of Presentation: Kagoshima Univ
  • Year and Date: 2008-03-19
  • Description: 「研究成果報告書概要(欧文)」より
• [Presentation] Competition and Ordering between charge, spin and orbital in RFe204 の電荷 (2008)
  • Author(s): N., Ikeda
  • Organizer: Meeting of Japan Physical Society
  • Place of Presentation: Kagoshima Univ
  • Year and Date: 2008-03-19
  • Description: 「研究成果報告書概要(欧文)」より
• [Presentation] Ordering of LuFe204in magnetic field (2008)
  • Author(s): K., Kakurai, M., Matsuda, K., Yoshii, N., Ikeda, T., Ishii, H., Kito, Y., Yamada
  • Organizer: Meeting of Japan Physical Society
  • Place of Presentation: Kagoshima Univ
  • Year and Date: 2008-03-19
  • Description: 「研究成果報告書概要(欧文)」より
• [Presentation] Giant Lattice distortion and nonlinear electronic conduction in θ-(BEDT-TTF)2CsZn(SCN)4 (2008)
  • Author(s): M., Watanabe, K., Yamamoto, Y., Nakajima, T., Ito, M., Tanabe, N., Hanasaki, N., Ikeda, Y., Nogami, H., Toyokawa, Y., Noda, I., Terasaki, B., Sawano, T., Suko, H., Mori, K., Mori
  • Organizer: Meeting of Japan Physical Society
  • Place of Presentation: Kagoshima Univ
  • Year and Date: 2008-03-19
  • Description: 「研究成果報告書概要(欧文)」より
• [Presentation] RFe204の非線形電気伝導 (2008)
  • Author(s): 池田直, 花咲徳亮, 道内尊正, 横田 祐輔
  • Organizer: トピカルミーティング
  • Place of Presentation: 京都大学
  • Year and Date: 2008-01-11
  • Description: 「研究成果報告書概要(和文)」より
• [Presentation] Nonlinear Conduction in RFe204 (2008)
  • Author(s): N., Ikeda, N., Hanasaki, T., Michiuchi, Y., Yokota
  • Organizer: Topical Meeting
  • Place of Presentation: Kyoto Univ
  • Year and Date: 2008-01-11
  • Description: 「研究成果報告書概要(欧文)」より
• [Presentation] Ferroelectric Properties of RFe204 by the Charge Ordering (2007)
  • Author(s): Naoshi Ikeda, Takamasa Michiuchi. YusukeYokota, Hironori Hayakara, Yoii Hatsuo, Shigeo Mori and Kenji Yoshii
  • Organizer: 13th US-Japan Seminar on Dielectric and Piezoelectric Cerami
  • Place of Presentation: Awaji Japan
  • Year and Date: 2007-11-04
  • Description: 「研究成果報告書概要(和文)」より
• [Presentation] Ferroelectric Properties of RFe204 by the Charge Ordering (2007)
  • Author(s): Naoshi, Ikeda, Takamasa, Michiuchi, Yusuke, Yokota, Hironori, Hayakawa,Yoji, Matsuo, Shigeo, Mori, Kenji, Yoshii
  • Organizer: 13th US-Japan Seminar on Dielectric and Piezoelectric Ceramics
  • Place of Presentation: Awaji Japan
  • Year and Date: 2007-11-04
  • Description: 「研究成果報告書概要(欧文)」より
• [Presentation] Ferroelectric Properties of RFe204 by the Charge Ordering (2007)
  • Author(s): Naoshi Ikeda, Takamasa Michiuchi. Yusuke Yokota, Hironori HayakaWa, Yoji Matsuo, Shigeo Mori and Kenji Yoshii
  • Organizer: 13th US-Japan Seminar on Dielectric and Piezoelectric Ceramic
  • Place of Presentation: Awaji Japan
  • Year and Date: 2007-11-04
• [Presentation] RFe204の電場応答1 (2007)
  • Author(s): 池田直, 横田祐輔, 道内尊正, 森茂生, 吉井賢資
  • Organizer: 日本物理学会 第62回年次大会
  • Place of Presentation: 北海道大学
  • Year and Date: 2007-09-24
  • Description: 「研究成果報告書概要(和文)」より
• [Presentation] LuFe204中のFe2+とFe3+の3d電子状態 (2007)
  • Author(s): 安居院あかね, 池田直, 森本昌鏡, 魚住孝幸, Tanle Kmber
  • Organizer: 日本物理学会 第62回年次大会
  • Place of Presentation: 北海道大学
  • Year and Date: 2007-09-24
  • Description: 「研究成果報告書概要(和文)」より
• [Presentation] 鉄複合酸化物RFe204における構造相転移と電荷秩序構造(2) (2007)
  • Author(s): 松尾祥史, 篠原聡, 森茂生, 吉井賢資, 池田直
  • Organizer: 日本物理学会 第62回年次大会
  • Place of Presentation: 北海道大学
  • Year and Date: 2007-09-22
  • Description: 「研究成果報告書概要(和文)」より
• [Presentation] 時間分割2次元ディテクタを用いたθ-(BEDT-TTF)2CsZn(SCN)4の電流下X線回折実験 (2007)
  • Author(s): 渡邉真史, 山本健一郎.伊藤崇芳, 花咲徳亮, 池田直, 野上由夫, 豊川秀訓, 野田幸男, 稲田太一, 須子友博, 寺崎一郎.森初果, 森健彦
  • Organizer: 日本物理学会 第62回年次大会
  • Place of Presentation: 北海道大学
  • Year and Date: 2007-09-21
  • Description: 「研究成果報告書概要(和文)」より
• [Presentation] θ-(BEDT-TTF)2CsM(SCN)4における電流密度に依存するエネルギーギャップ (2007)
  • Author(s): 寺崎一郎, 澤野文章, 須子友博, 田崎秀一, 森初果, 森健彦, 野上由夫, 池田直, 渡邉真史, 野田幸男
  • Organizer: 日本物理学会 第62回年次大会
  • Place of Presentation: 北海道大学
  • Year and Date: 2007-09-21
  • Description: 「研究成果報告書概要(和文)」より
• [Presentation] Electronic Ferroelectricity from Charge Ordering in RFe204 (2007)
  • Author(s): N. Ikeda, Y. Matsuo, S. Mori and K. Yoshii
  • Organizer: The 16th International Symposium on the Application of Ferroelectrics
  • Place of Presentation: Nara Japan
  • Year and Date: 2007-05-27
  • Description: 「研究成果報告書概要(和文)」より
• [Presentation] 放射光を用いたTaSe3トポロジカル結晶の歪み解析 (2007)
  • Author(s): 山本健一郎, 松浦徹, 丹田聡, 伊藤崇芳, 堀田慎太郎, 池田直, 野上由夫
  • Organizer: 日本物埋学会 春季大会
  • Place of Presentation: 鹿児島大学
  • Year and Date: 2007-03-19
  • Description: 「研究成果報告書概要(和文)」より
• [Presentation] 鉄複合酸化物YFe204における構造相転移と電荷秩序構造 (2007)
  • Author(s): 篠原聡, 松尾祥史, 森茂生, 堀部陽一, 吉井賢次, 池田直
  • Organizer: 日本初理学会 春季大会
  • Place of Presentation: 鹿児島大学
  • Year and Date: 2007-03-19
  • Description: 「研究成果報告書概要(和文)」より
• [Presentation] RFe204の電荷・スピン・軌道の競合と秩序化 (2007)
  • Author(s): 池田直
  • Organizer: 日本物理学会 春季大会
  • Place of Presentation: 鹿児島大学
  • Year and Date: 2007-03-19
  • Description: 「研究成果報告書概要(和文)」より
• [Presentation] 積層三角格子物質LuFe204の磁場中磁気秩序過程 (2007)
  • Author(s): 加倉井和久, 松田雅昌, 吉井賢資, 池田直, 石井慶信, 鬼頭聖, 山田安定
  • Organizer: 日本物理学会 春季大会
  • Place of Presentation: 鹿児島大学
  • Year and Date: 2007-03-19
  • Description: 「研究成果報告書概要(和文)」より
• [Presentation] θ-(BEDT-TTF)2CsZn(SCN)4の非線形伝導と巨大格子変形 (2007)
  • Author(s): 渡邉真史, 山本健一郎, 中島悠策, 伊藤崇芳, 田辺誠, 花咲徳亮, 池田直, 野上由夫, 豊川秀訓, 野田幸男, 寺崎一郎, 澤野文章, 須子友博, 森初果, 森健彦
  • Organizer: 日本物理学会 春季大会
  • Place of Presentation: 鹿児島大学
  • Year and Date: 2007-03-19
  • Description: 「研究成果報告書概要(和文)」より
• [Presentation] 放射光を用いたTaSe3トポロジカル結晶の歪み解析 (2007)
  • Author(s): 山本健一郎, 松浦徹, 丹田聡, 伊藤崇芳, 堀田慎太郎, 池田直, 野上由夫
  • Organizer: 日本物理学会 春季大会
  • Place of Presentation: 鹿児島大学
  • Year and Date: 2007-03-19
• [Presentation] 鉄複合酸化物YFe204における構造相転移と電荷秩序構造 (2007)
  • Author(s): 篠原聡, 松尾祥史, 森茂生, 堀部陽一, 吉井賢次, 池田直
  • Organizer: 日本物理学会 春季大会
  • Place of Presentation: 鹿児島大学
  • Year and Date: 2007-03-19
• [Presentation] RFe204の電荷秩序化による強誘電性 (2006)
  • Author(s): 池田直、森茂生、吉井賢資
  • Organizer: 第17回日本MRS学術シンポジウム
  • Place of Presentation: 東京日大駿河台キャンパス
  • Year and Date: 2006-12-10
  • Description: 「研究成果報告書概要(和文)」より
• [Presentation] ルテニウムダブルペロブスカイトの磁性と誘電性 (2006)
  • Author(s): 吉井賢資、池田直、森茂生、米田安宏、水牧仁一朗、谷田肇、河村直己
  • Organizer: 第17回日本MRS学術シンポジウム
  • Place of Presentation: 東京日大駿河台キャンパス
  • Year and Date: 2006-12-10
  • Description: 「研究成果報告書概要(和文)」より
• [Presentation] YFe204-δにおける電荷秩序構造とその分域構造 (2006)
  • Author(s): 森茂生、篠原聡、松尾祥史、堀部陽一、吉井賢資、池田直
  • Organizer: 第17回日本MRS学術シンポジウム
  • Place of Presentation: 東京日大駿河台キャンパス
  • Year and Date: 2006-12-10
  • Description: 「研究成果報告書概要(和文)」より
• [Presentation] Ferroelectricity from Electron Ordering in RFe2O4 (2006)
  • Author(s): N., Ikeda, S., Mori and K., Yoshii
  • Organizer: 17th Japan MRS Meeting
  • Place of Presentation: Nihon Univ
  • Year and Date: 2006-12-10
  • Description: 「研究成果報告書概要(欧文)」より
• [Presentation] Magnetism and dielectrics in Ruthenium double perovskite (2006)
  • Author(s): K., Yoshii, N., Ikeda, S., Mori Y., Yoneda, M., Mizumaki., H., Tanida and N., Kawamura
  • Organizer: 17th Japan MRS Meeting
  • Place of Presentation: Nihon Univ
  • Year and Date: 2006-12-10
  • Description: 「研究成果報告書概要(欧文)」より
• [Presentation] Charge Ordering and its domain structure of YFe2O4 (2006)
  • Author(s): S., Mori, S., Shinohara, Y., Matsuo, Y., Horibe, K., Yoshii, N., Ikeda
  • Organizer: 17th Japan MRS Meeting
  • Place of Presentation: Nihon Univ
  • Year and Date: 2006-12-10
  • Description: 「研究成果報告書概要(欧文)」より
• [Presentation] Ferroelectricity from Electron Ordering (2006)
  • Author(s): N. Ikeda. S. Mori and K. Yoshii
  • Organizer: 2006 MRS Fall Meeting
  • Place of Presentation: Boston
  • Year and Date: 2006-11-27
  • Description: 「研究成果報告書概要(和文)」より
• [Presentation] Doping Effect on the Charge Ordering in LuFe204 (2006)
  • Author(s): S. Mori, Y. Matsuo, Y. Horibe, K. Yoshii and N. Ikeda
  • Organizer: 2006 MRS Fall Meeting
  • Place of Presentation: Boston
  • Year and Date: 2006-11-27
  • Description: 「研究成果報告書概要(和文)」より
• [Presentation] Doping Effect on the Charge Ordering in LuFe2O4 (2006)
  • Author(s): S., Mori, Y., Matsuo, Y., Horibe, K., Yoshii and N., Ikeda
  • Organizer: 2006 MRS Fall Meeting
  • Place of Presentation: Boston
  • Year and Date: 2006-11-27
  • Description: 「研究成果報告書概要(欧文)」より
• [Presentation] TEM study of charge ordered structure in YFe204-δ (2006)
  • Author(s): S. Mori, S. Shinohara, Y. Matsuo, Y. Horibe, K. Yoshii and N. Ikeda
  • Organizer: Kyoto Conference on Solid State Chemistry
  • Place of Presentation: 京都 京都大学
  • Year and Date: 2006-11-15
  • Description: 「研究成果報告書概要(和文)」より
• [Presentation] Ferroelectricity of electronic in RFe204 (2006)
  • Author(s): N. Ikeda. S. Mori and K. Yoshii
  • Organizer: Kyoto Conference on Solid State Chemistry
  • Place of Presentation: 京都 京都大学
  • Year and Date: 2006-11-15
  • Description: 「研究成果報告書概要(和文)」より
• [Presentation] TEM study of charge ordered structure in YFe2O4-δ (2006)
  • Author(s): S., Mori, S., Shinohara, Y., Matsuo, Y., Horibe, K., Yoshii, N., Ikeda
  • Organizer: Kyoto Conference on Solid State Chemistry
  • Place of Presentation: Kyoto University
  • Year and Date: 2006-11-05
  • Description: 「研究成果報告書概要(欧文)」より
• [Presentation] Ferroelectricity of electronic in RFe2O4 (2006)
  • Author(s): N., Ikeda, S., Mori, K., Yoshii
  • Organizer: Kyoto Conference on Solid State Chemistry
  • Place of Presentation: Kyoto University
  • Year and Date: 2006-11-05
  • Description: 「研究成果報告書概要(欧文)」より
• [Presentation] 非線形電気伝導状態におけるθ-(BEDT-TTF)2CsZn(SCN)4の格子変形 (2006)
  • Author(s): 渡邉真史.伊藤崇芳.山本健一郎.中島悠策.花咲徳亮.池田直.野上由夫.大隅寛之.豊川秀訓.野田幸男.寺崎一郎.澤野文章.須子友博.森初果.森健彦
  • Organizer: 日 本物理学会 2006年秋季大会
  • Place of Presentation: 千葉 千葉大学
  • Year and Date: 2006-09-25
  • Description: 「研究成果報告書概要(和文)」より
• [Presentation] Lattice distortion ofθ-(BEDT-TTF)2CsZn(SCN)4 in nonlinear electronic conduction state (2006)
  • Author(s): M., Watanabe, T., Ito, K., Yamamoto, Y., Nakajima, N., Hanasaki, N., Ikeda, Y., Nogami, H., Ohsumi, H., Toyokawa, Y., Noda, I., Terasaki, B., Sawano, T., Suko, H., Mori, K., Mori
  • Organizer: Meeting of Japan Physical Society
  • Place of Presentation: Chiba Univ
  • Year and Date: 2006-09-25
  • Description: 「研究成果報告書概要(欧文)」より
• [Presentation] 国際物理オリンピック(IPhO)と物理チャレンジIV.物理チャレンジ2006の実施 (2006)
  • Author(s): 原田勲, 池田直, 作田誠, 味野道信, 二宮正夫, 有山正孝, 並木雅俊, 北原和夫
  • Organizer: 日 本物理学会 2006年秋季大会
  • Place of Presentation: 千葉 千葉大学
  • Year and Date: 2006-09-24
  • Description: 「研究成果報告書概要(和文)」より
• [Presentation] International Physics Olympic (IPhO) and BUTURI-CHARENGE (2006) (2006)
  • Author(s): I., Harada, N., Ikeda, M., Sakuda, M., Mino, M., Ninomiya, M., Ariyama, T., Namiki, K., Kitahara
  • Organizer: Meeting of Japan Physical Society
  • Place of Presentation: Chiba Univ
  • Year and Date: 2006-09-24
  • Description: 「研究成果報告書概要(欧文)」より
• [Presentation] ペロブスカイト型マンガン酸化物Tb0.3Gd0.7MnO3の強誘電相(P//a)における単結晶構造解析 (2006)
  • Author(s): 後藤剛史, 有馬孝尚, 山崎裕一, 池田直, 大隅寛幸, 十倉好紀
  • Organizer: 日 本物理学会 2006年秋季大会
  • Place of Presentation: 千葉 千葉大学
  • Year and Date: 2006-09-23
  • Description: 「研究成果報告書概要(和文)」より
• [Presentation] Crystal Structure analysis in ferroelectric phase Tb0.3Gd0.7Mn03 (2006)
  • Author(s): T., Goto, T Arima, Y., Yamazaki, N., Ikeda, H., Ohsumi, Y., Tokura
  • Organizer: Meeting of Japan Physical Society
  • Place of Presentation: Chiba Univ
  • Year and Date: 2006-09-23
  • Description: 「研究成果報告書概要(欧文)」より
• [Presentation] Local structure of (Bil-xLax)Fe03 (2006)
  • Author(s): Y. Yoneda, K. Yoshii, H. Saitoh, and J. Mizuki
  • Organizer: The 5th Asian Meeting on Ferroelectrics
  • Place of Presentation: 野田 東京理科大学
  • Year and Date: 2006-09-05
  • Description: 「研究成果報告書概要(和文)」より
• [Presentation] Local structure of (Bil-xLax)FeO3 (2006)
  • Author(s): Y., Yoneda, K., Yoshii, H., Saitoh, and J., Mizuki
  • Organizer: The 5th Asian Meeting on Ferroelectrics
  • Place of Presentation: Tokyo Science Univ
  • Year and Date: 2006-09-05
  • Description: 「研究成果報告書概要(欧文)」より
• [Presentation] Magnetic and dielectric behavior of TmFe204 and TmFeCu04 (2006)
  • Author(s): K. Yoshii. N. Ikeda and S. Mori
  • Organizer: Interational Conference on Magnetism 2006
  • Place of Presentation: 京都 京都国際会館
  • Year and Date: 2006-08-25
  • Description: 「研究成果報告書概要(和文)」より
• [Presentation] Doping effect on charge ordering and magnetism in triangle lattice systemLuFe204 (2006)
  • Author(s): Y. Matsuo, Y. Horibe, S. Mori, K. Yoshii and N. Ikeda
  • Organizer: International Conference on Magnetism 2006
  • Place of Presentation: 京都 京都国際会館
  • Year and Date: 2006-08-25
  • Description: 「研究成果報告書概要(和文)」より
• [Presentation] Electronic structure and magnetism of CaMnl-xRux03 thin films (2006)
  • Author(s): K. Terai. K. Yoshii, Y. Takeda. S.l. Fujimori, K. Oowada, T. Inami. T. Okane, M. Arita, K. Shimada. H. Namatame. M. Taniguchi, K. Kobayashi, M. Kobayashi and A. Fujimori
  • Organizer: International Conference on Magnetism 2006
  • Place of Presentation: 京都 京都国際会館
  • Year and Date: 2006-08-25
  • Description: 「研究成果報告書概要(和文)」より
• [Presentation] Magnetic dielectric behavior of TmFe2O4, TmFeCuO4 (2006)
  • Author(s): K., Yoshii, N., Ikeda, S., Mori
  • Organizer: International Conference on Magnetism
  • Place of Presentation: Kyoto International Conference Hall
  • Year and Date: 2006-08-25
  • Description: 「研究成果報告書概要(欧文)」より
• [Presentation] Doping effect on charge ordering and magnetism in triangle lattice system LuFe2O4 (2006)
  • Author(s): Y., Matsuo, Y., Horibe, S., Mod, K., Yoshii, N., Ikeda
  • Organizer: International Conference on Magnetism
  • Place of Presentation: Kyoto International Conference Hall
  • Year and Date: 2006-08-25
  • Description: 「研究成果報告書概要(欧文)」より
• [Presentation] Fujimori Electronic structure and magnetism of CaMnl-xRuxO3 thin films (2006)
  • Author(s): K., Terai, K., Yoshii, Y., Takeda, S.,I., Fujimori, K., Oowada, T., Inami, T., Okane, M., Arita, K., Shimada, H., Namatame, M., Taniguchi, K .,Kobayashi, M., Kobayashi, A
  • Organizer: International Conference on Magnetism
  • Place of Presentation: Kyoto International Conference Hall
  • Year and Date: 2006-08-25
  • Description: 「研究成果報告書概要(欧文)」より
• [Presentation] Magnetic ordering process in the charge-frustrated ferroelectric system Lu (2006)
  • Author(s): K. Kakurai, N. Ikeda. S. Nagai. N. Matsuda. Y.Ishii. K. Ohwada. T. Inami. K. Yoshii. Y. Nurakami. H. Kito and Y. Yamada
  • Organizer: International Conference on Magnetism 2006
  • Place of Presentation: 京都 京都国際会館
  • Year and Date: 2006-08-24
  • Description: 「研究成果報告書概要(和文)」より
• [Presentation] Magnetic ordering process in the charge-frustrated ferroelectric system LuFe2O4 (2006)
  • Author(s): K., Kakurai, N., Ikeda, S., Nagai, M., Matsuda, Y., Ishii, K., Ohwada, T., Inami, K., Yoshii, Y., Murakami, H., Kito, Y., Yamada
  • Organizer: International Conference on Magnetism
  • Place of Presentation: Kyoto International Conference Hall
  • Year and Date: 2006-08-24
  • Description: 「研究成果報告書概要(欧文)」より
• [Presentation] Ferroelectricity from Valence Ordering in RFe204 (2006)
  • Author(s): N. Ikeda, S. Mori and K. Yoshii
  • Organizer: The 8th Russia/CIS/Baltic/Japan Symposium on Ferroelectricity (RCBJSF-8)
  • Place of Presentation: つくば筑波大学
  • Year and Date: 2006-05-18
  • Description: 「研究成果報告書概要(和文)」より
• [Presentation] Magnetic and Ferroelectric Properties of (Bil-xLax) Fe03 (2006)
  • Author(s): Y. Yoneda, K. Yoshii, and J.Mizuki
  • Organizer: The 8th Russia/CIS/Baltic/Japan Symposium on Ferroelectrici
  • Place of Presentation: つくば筑波大学
  • Year and Date: 2006-05-16
  • Description: 「研究成果報告書概要(和文)」より
• [Presentation] Magnetic and Ferroelectric Properties of (Bil-xLax)FeO3 (2006)
  • Author(s): Y., Yoneda, K., Yoshii, J., Mizuki
  • Organizer: The 8th Russia/CIS/Baltic/Japan Symposium on Ferroelectricity (RCBJSF-8)
  • Place of Presentation: Tsukuba Univ
  • Year and Date: 2006-05-16
  • Description: 「研究成果報告書概要(欧文)」より
• [Presentation] Doping Effect on Ferroelectric Microstructure in YMnl-xTixO3 (2006)
  • Author(s): S., Mori, J., Tokunaga, Y., Horibe, T., Katsufuji, T., Asada, Y., Koyama
  • Organizer: The 8th Russia/CIS/Baltic/Japan Symposium on Ferroelectricity (RCBJSF-8)
  • Place of Presentation: Tsukuba Univ
  • Year and Date: 2006-05-16
  • Description: 「研究成果報告書概要(欧文)」より
• [Presentation] Ferroelectricity from Valence Ordering in RFe2O4 (2006)
  • Author(s): N., Ikeda, S., Mod, K., Yoshii
  • Organizer: The 8th Russia/CIS/Baltic/Japan Symposium on Ferroelectricity (RCBJSF-8)
  • Place of Presentation: Tsukuba Univ
  • Year and Date: 2006-05-16
  • Description: 「研究成果報告書概要(欧文)」より
• [Presentation] Doping Effect on Ferroelectric Microstructure in YMn1-xTix03 (2006)
  • Author(s): S.Mori, J. Tokunaga, Y. Horibe, T. Katsufuji, T. Asada and Y. Koyama
  • Organizer: The 8th Russia/CIS/Baltic/Japan Symposium on Ferroelectricity (RCBJSF-8)
  • Place of Presentation: つくば筑波大学
  • Year and Date: 2006-05-01
  • Description: 「研究成果報告書概要(和文)」より
• [Patent(Industrial Property Rights)] 電子素子及び電気伝導度制御方法 (2007)
  • Inventor(s): 池田直
  • Industrial Property Rights Holder: 国立大学法人岡山大学
  • Industrial Property Number: 2007-219050
  • Filing Date: 2007-08-24
  • Description: 「研究成果報告書概要(和文)」より
• [Patent(Industrial Property Rights)] 電子素子及び電気伝導度制御方法 (2007)
  • Inventor(s): 池田直
  • Industrial Property Rights Holder: 国立大学法人岡山大学
  • Industrial Property Number: 2007-219049
  • Filing Date: 2007-08-24
  • Description: 「研究成果報告書概要(和文)」より