Elucidation of the correlation of structural phase transition mechanism and physical properties, in transition-metal pyrochlores

2011 Fiscal Year Final Research Report

• Project/Area Number: 21540330
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Condensed matter physics I
• Research Institution: National Institute for Materials Science
• Principal Investigator: MATSUSHITA Yoshitsaka 独立行政法人物質・材料研究機構, 高輝度放射光ステーション, 主幹エンジニア (70422441)
• Project Period (FY): 2009 – 2011
• Keywords: 強相関電子系 / 固体化学 / 放射線・X線・粒子線 / 物性実験

Research Abstract

In this study, the synthesis and crystal growth methods of target compounds were developed. Characterization of the compounds were carried out using various techniques such as elemental analyses, magnetic property measurements, optical measurements and so on. The samples characterized well, were used for diffraction studies using high-angular resolution powder diffractometer installed at NIMS beamline, SPring-8.Then, I could successfully raise many achievements on this study including related compounds.

Research Products

• [Journal Article] Resistive switching phenomenon driven by antiferromagnetic phase separation in an antiperovskite nitride Mn_3ZnN (2012)
  • Author(s): Y. S. Sun, Y. F. Guo, X. X. Wang, Y. Tsujimoto, Y. Matsushita, Y. G. Shi, C. Wang, A. A. Belik, and K. Yamaura
  • Journal Title: Appl. Phys. Lett Volume: 100 Pages: 161907-1-161907-4
  • Peer Reviewed
• [Journal Article] Crystal structure, magnetic and transport properties of layered cobalt oxyfluorides, Sr_2CoO_<3+x> F_<1-x>(0.x. 0.15) (2012)
  • Author(s): Y. Tsujimoto, C. Sathish, K.-P. Hong, K. Oka, M. Azuma, Y. Guo, Y. Matsushita, K. Yamaura, and E. Takayama-Muromachi
  • Journal Title: Inorg. Chem Volume: 51 Pages: 4802-4809
  • Peer Reviewed
• [Journal Article] Synchrotron X-ray, Photoluminescence, and Quantum Chemistry Studies of Bismuth-Embedded Dehydrated Zeolite Y (2012)
  • Author(s): H-T. Sun, Y. Matsushita, Y. Sakka, N. Shirahata, M. Tanaka, Y. Katsuya, H. Gao, and K. Kobayash
  • Journal Title: J. Am. Chem. Soc Volume: 134 Pages: 2918-2921
  • Peer Reviewed
• [Journal Article] Electrical, optical, and thermoelectric properties of Ga_2O_3(ZnO)_9 (2011)
  • Author(s): Y. Michiue, T. Mori, A. Prytuliak, Y. Matsushita, M. Tanaka, and N. Kimizuka
  • Journal Title: RSC Advances Volume: 1 Pages: 1788-1793
  • Peer Reviewed
• [Journal Article] Crystal structure and magnetic properties of 6H-SrMnO_3 (2011)
  • Author(s): A. A. Belik, Y. Matsushita, Y. Katsuya, M. Tanaka, T. Kolodiazhnyi, M. Isobe, and E. Takayama-Muromachi
  • Journal Title: Phys. Rev. B Volume: 84 Pages: 0944381-1-094438-6
  • Peer Reviewed
• [Journal Article] Topotactic synthesis and crystal structure of a highly fluorinated Ruddlesden-Popper type iron oxide, Sr_3Fe_2O_<5+x> F_<2-x>(x～ 0.44) (2011)
  • Author(s): Y. Tsujimoto, K. Yamaura, N. Hayashi, K. Kodama, N. Igawa, Y. Matsushita, Y. Katsuya and E. Takayama-Muromachi
  • Journal Title: Chem. Mater Volume: 23 Pages: 3652-3658
  • Peer Reviewed
• [Journal Article] Low-Temperature Vacuum Reduction of BiMnO_3 (2011)
  • Author(s): A. A. Belik, Y. Matsushita, M. Tanaka, and E. Takayama-Muromachi
  • Journal Title: Inorg. Chem Volume: 50 Pages: 7685-7689
  • Peer Reviewed
• [Journal Article] Synthesis of Nanostructured Reduced Titanium Oxide : Crystal Structure Transformation Maintaining Nanomorphology (2011)
  • Author(s): S. Tominaka, Y. Tsujimoto, Y. Matsushita, and K. Yamaura
  • Journal Title: Angew. Chem. Int. Ed Volume: 50 Pages: 7418-7421
  • Peer Reviewed
• [Journal Article] Sr_3Co_2O_6 : a possible frustrated spin-chain material (2011)
  • Author(s): X. X. Wang, J. J. Li, Y. G. Shi, Y. Tsujimoto, Y. F. Guo, S. B. Zhang, Y. Matsushita, M. Tanaka, Y. Katsuya, K. Kobayashi, K. Yamaura, and E. Takayama-Muromachi
  • Journal Title: Phys. Rev. B Volume: 83 Pages: 100410(R)-1-100410(R)-4
  • Peer Reviewed
• [Journal Article] New layered cobalt oxyfluoride, Sr_2CoO_3F (2011)
  • Author(s): Y. Tsujimoto, J. J. Li, K. Yamaura, Y. Matsushita, Y. Katsuya, M. Tanaka, Y. Shirako, M. Akaogi, and E. Takayama-Muromachi
  • Journal Title: Chem. Comm Volume: 47 Pages: 3263-3265
  • Peer Reviewed
• [Journal Article] Tight relation between the oxygen deficiency and Tc in LaFeAsO_<1-d> (2010)
  • Author(s): Y. F. Guo, Y. G. Shi, S. Yu, A. A. Belik, Y. Matsushita, M. Tanaka, Y. Katsuya, K. Kobayashi, Y. Hata, H. Yasuoka, K. Yamaura, and E. Takayama-Muromachi
  • Journal Title: Physica C Volume: 470 Pages: 438-439
  • Peer Reviewed
• [Journal Article] Unusual Perovskites with Unusual Properties (2010)
  • Author(s): A. A. Belik, Y. Matsushita, M. Tanaka, and E. Takayama-Muromachi
  • Journal Title: Angew. Chem. Int. Ed Volume: 49 Pages: 7723-7727
  • Peer Reviewed
• [Journal Article] Large decrease in the critical temperature of superconducting LaFeAsO_<0.85> compounds doped with 3% atomic weight of nonmagnetic Zn impurities (2010)
  • Author(s): Y. F. Guo, Y. G. Shi, S. Yu, A. A. Belik, Y. Matsushita, M. Tanaka, Y. Katsuya, K. Kobayashi, I. Nowik, I. Felner, V. P. S. Awana, K. Yamaura, and E. Takayama-Muromachi
  • Journal Title: Phys Rev. B Volume: 82 Pages: 054506-1-054506-7
  • Peer Reviewed
• [Presentation] High-pressure synthesis of new ferroelectric and multiferroic perovskite materials (2012)
  • Author(s): A. A. Belik, T. Furubayashi, Y. Matsushita, M. Tanaka, S. Hishita, and E. Takayama-Muromachi
  • Organizer: Fundamental Physics of Ferroelectrics and Related Materials 2012
  • Place of Presentation: Chicago, U. S. A.
  • Year and Date: 20120129-0201
• [Presentation] 反転対称性の破れた導電性イリジウム酸化物Pb2Ir2O7の電子物性 (2011)
  • Author(s): 平田靖透、中嶋誠、末元徹、田島裕之、麻生佳子、木内陽子、松下能孝、大串研也
  • Organizer: 日本物理学会秋季年会
  • Place of Presentation: 富山大学、富山市
  • Year and Date: 20110921-24
• [Presentation] Crystal structures of new superconducting compounds, LnT_2Zn_<20>(Ln=La, Pr, T=Ru, Ir) (2011)
  • Author(s): Y. Matsushita, T. Onimaru, K. T. Matsumoto, A. Sato, and T. Takabatake
  • Organizer: 22^<nd> Intl. Union Crystal. Congress(XXII IUCr)
  • Place of Presentation: Madrid, Spain
  • Year and Date: 20110822-30
• [Presentation] 反転対称性の破れた導電性イリジウム酸化物Pb_2Ir_2O_7の電子物性 (2011)
  • Author(s): 平田靖透、中嶋誠、末元徹、田島裕之、麻生佳子、木内陽子、松下能孝、大串研也
  • Organizer: 第7回・トピカル・ミーティング
  • Place of Presentation: 彦根市
  • Year and Date: 20110701-02
• [Presentation] Noncentrosymmetric Conductive Iridium Oxides (2011)
  • Author(s): Y. Hirata, M. Nakajima, T. Suemoto, H. Tajima, K. Asoh, Y. Kiuchi, Y. Matsushita, K. Ohgushi
  • Organizer: 重い電子系の形成と秩序化第3回研究会
  • Place of Presentation: 東京大学、柏市
  • Year and Date: 20110623-25
• [Presentation] Redetermination of Crystal Structure of Semseyite, Pb_9Sb_8S_<21> (2010)
  • Author(s): Y. Matsushita
  • Organizer: 20^<th> General Meeting of the Intl. Mineral. Assoc.(IMA2010)
  • Place of Presentation: Budapest, Hungary
  • Year and Date: 20100821-27
• [Presentation] Electronic Properties of Polar-Metallic Iridium Oxides (2010)
  • Author(s): Y. Hirata, M. Nakajima, T. Suemoto, H. Tajima, Y. Hirata, M. Nakajima, T. Suemoto, H. Tajima
  • Organizer: 26^<th> Intl. Conf. on Low Temperature Physics(LT26)
  • Place of Presentation: Beijing, China
  • Year and Date: 20100810-17