Search for unusual magnetic, electric and dielectric phenomena with contributions of s-electrons

2009 Fiscal Year Final Research Report

• Project/Area Number: 19340098
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Condensed matter physics II
• Research Institution: Kyoto University
• Principal Investigator: AZUMA Masaki Kyoto University, 化学研究所, 准教授 (40273510)
• Co-Investigator(Kenkyū-buntansha): SHIMAKAWA Yuichi 京都大学, 化学研究所, 教授 (20372550) ; SAITO Tkashi 京都大学, 化学研究所, 助教 (40378857) ; MIZUMAKI Masaichiro 財)高輝度光科学研究センター, 利用研究促進部門動的構造クセループ, 副主任研究員 (60360830)
• Project Period (FY): 2007 – 2009
• Keywords: 強相関電子系 / 電子・電気材料 / 放射線・X線・粒子線 / 物性実験

Research Abstract

6s electrons of Bi greatly act on the crystallographic structure and the banded structure of a compound, and affect the electrical property. We searched for unusual magnetic, electrical and the dielectric properties in the perovskite compound where such Bi ion was arranged on A-site. Several peculiar phenomena such as absence of the long-range magnetic order in Bi_3Mn_4O_<12>(NO_3), an insulator to metal transition accompanied with a negative thermal expansion in Bi_<0.95>La_<0.05>NiO_3 and the enhancement of the piezoelectric property in BiFe_<1-x>Co_xO_3 were found.

Research Products

• [Journal Article] Crystal Structures and Electric Properties of (1-x)BiFe03-xBiCoO3 Thin Films Prepared by Chemical Solution Deposition (2010)
  • Author(s): Y. Nakamura, M. Kawai, M. Azuma, Y. Shimakawa
  • Journal Title: Jpn. J. Appl. Phys. 49 Pages: 051501
  • Peer Reviewed
• [Journal Article] Direct observation of the pressure-induced charge redistribution in BiNiO3 by x-ray absorption spectroscopy (2009)
  • Author(s): Mizumaki, M., N. Ishimatsu, N. Kawamura, M. Azuma, Y. Shimakawa, M. Takano, T. Uozumi
  • Journal Title: Phys. Rev. B 80 Pages: 233104-1-233104-4
  • Peer Reviewed
• [Journal Article] Synthesis, Crystal Structure and Magnetic Properties of Bi3Mn4O12(NO3) Oxynitrate Comprising S=3/2 Honeycomb Lattice (2009)
  • Author(s): O. Smirnova, M. Azuma, N. Kumada, Y. Kusano, M. Matsuda, Y. Shimakawa, T. Takei, Y. Yonesaki, N. Kinomura
  • Journal Title: J. Am. Chem. Soc. 131 Pages: 8313-8317
  • Peer Reviewed
• [Journal Article] Temperature-induced A-B intersite charge transfer in an A-site-ordered LaCu3Fe4O12 perovskite (2009)
  • Author(s): Y.W. Long, N. Hayashi, T. Saito, M. Azuma, S. Muranaka, Y. Shimakawa
  • Journal Title: Nature 458 Pages: 60-63
  • Peer Reviewed
• [Journal Article] Synthesis and Physical Properties of Double Perovskite Pb2FeReO6 (2009)
  • Author(s): K. Nishimura, M. Azuma, S. Hirai, M. Takano, Y. Shimakawa
  • Journal Title: Inorg. Chem 48 Pages: 5962-5966
  • Peer Reviewed
• [Journal Article] Magnetic ground-state of perovskite PbVO3 with large tetragonal distortion (2008)
  • Author(s): K. Oka, I. Yamada, M. Azuma, S. Takeshita, K.H. Satoh, A. Koda, R. Kadono, M. Takano, Y. Shimakawa
  • Journal Title: Inorg. Chem. 47 Pages: 7355-7359
  • Peer Reviewed
• [Journal Article] Charge and magnetic orderings in the triangular-lattice antiferromagnet InFe2O4 (2008)
  • Author(s): K. Oka, M. Azuma, N. Hayashi, S. Muranaka, Y. Narumi, K. Kindo, S. Ayukawa, M. Kato, Y. Koike, Y. Shimakawa, M. Takano
  • Journal Title: J. Phys. Soc. Jpn. 77 Pages: 064803
  • Peer Reviewed
• [Journal Article] Pressure-Induced Intermetallic Valence Transition in BiNiO3 (2007)
  • Author(s): M. Azuma, S. Carlsson, J. Rodgers, M.G. Tucker, M. Tsujimoto, S. Ishiwata, S. Isoda, Y. Shimakawa, M. Takano, J.P. Attfield
  • Journal Title: J. Am. Chem. Soc. 129 Pages: 11443-114436
  • Peer Reviewed
• [Presentation] Frustrated S=3/2 Honeycomb Antiferromagnet Bi3Mn4O12(NO3), International Conference on Magnetism (2009)
  • Author(s): M. Azuma
  • Organizer: Conference on Magnetism, Superconductivity and Phase Transitions in Novel and Complex Materials 2009
  • Place of Presentation: カルカッタ、インド
  • Year and Date: 2009-11-12
• [Presentation] 巨大な正方晶歪みを持つPbTiO3型ペロブスカイトPbVO3とBiCoO3 (2009)
  • Author(s): 東正樹
  • Organizer: 日本物理学会2009年秋季大会
  • Place of Presentation: 熊本大学
  • Year and Date: 2009-09-26
• [Presentation] 巨大な正方晶歪みを持つPbTiO3型ペロブスカイトPbVO3とBiCoO3 (2008)
  • Author(s): 東正樹
  • Organizer: 日本セラミックス協会第21回秋期シンポジウム
  • Place of Presentation: 北九州国際会議場
  • Year and Date: 2008-09-18
• [Presentation] PbVO3 and BiCoO3 with large tetragonal distortions (2008)
  • Author(s): M. Azuma
  • Organizer: 7th Korea-Japan Conference on Ferroelectricity
  • Place of Presentation: 済州国立大学韓国
  • Year and Date: 2008-08-08
• [Presentation] Charge and Orbital Orderings in Some New Oxides (2008)
  • Author(s): M. Azuma
  • Organizer: UC Santa Barbara Workshop on Frontiers in Complex Oxide
  • Place of Presentation: カリフォルニア大学サンタバーバラ校
  • Year and Date: 2008-07-07
• [Presentation] 新しい電荷不均化系の高圧合成とその圧力下物性 (2007)
  • Author(s): 東正樹
  • 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: 2007-09-23
• [Presentation] ビスマスの特性を活かしたペロブスカイト化合物の磁性・誘電性・電気伝導制御 (2007)
  • Author(s): 東正樹
  • Organizer: 日本セラミックス協会第20回秋期シンポジウム
  • Place of Presentation: 名古屋工業大学
  • Year and Date: 2007-09-13
• [Presentation] High Pressure Synthesis of Functional Transition Metal Oxides (2007)
  • Author(s): M. Azuma
  • Organizer: ICMR Workshou on Functional Oxide Material
  • Place of Presentation: カリフォルニア大学サンタバーバラ校
  • Year and Date: 2007-08-22
• [Patent(Industrial Property Rights)] 圧電薄膜、圧電素子および圧電素子の製造方法 (2010)
  • Inventor(s): 久保田純, 高嶋健二, 東正樹, 中村嘉孝, 島川祐一, 飯島高志, 李鳳淵
  • Industrial Property Rights Holder: キヤノン株式会社,国立大学法人京都大学,独立行政法人産業技術総合研究所
  • Industrial Property Number: 特許・特願2010-045907
  • Filing Date: 2010-03-11
• [Patent(Industrial Property Rights)] 圧電薄膜、圧電素子、圧電素子の製造方法、液体吐出ヘッドおよび超音波モータ (2010)
  • Inventor(s): 久保田純, 武田憲一, 林潤平, 島田幹夫, 島川祐一、東正樹, 中村嘉孝, 河合正徳
  • Industrial Property Rights Holder: キヤノン株式会社,国立大学法人京都大学
  • Industrial Property Number: 特許・特願2010-045907
  • Filing Date: 2010-03-02
• [Patent(Industrial Property Rights)] 金属酸化物および圧電材料 (2009)
  • Inventor(s): 久保田純, 三浦薫, 伊福敏博, 林潤平, 東正樹, スミルノワオルガアレキサンドロワ, 舟窪浩, 内田寛, 熊田伸弘, 和田智志, 飯島高志, 岡村総一郎
  • Industrial Property Rights Holder: キヤノン株式会社、国立大学法人京都大学、国立大学法人東京工業大学、学校法人上智学院、国立大学法人山梨大学、独立行政法人産業技術総合研究所、学校法人東京理科大学
  • Patent Publication Number: 特許・特開2010-053024
  • Filing Date: 2009-07-24