Study on Synthesis of New Materials by Ozone Process and Their Properties

2012 Fiscal Year Final Research Report

• Project/Area Number: 22750050
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Single-year Grants
• Research Field: Inorganic chemistry
• Research Institution: Kyoto University
• Principal Investigator: HAYASHI Naoaki 京都大学, 次世代低炭素ナノデバイス創製ハブ, 特定専門業務職員 (70346047)
• Project Period (FY): 2010 – 2012
• Keywords: オゾン / ペロブスカイト / 異常高原子価 / 強磁性 / メスバウア効果

Research Abstract

By the low temperature oxidation technique using ozone, we attempted to synthesize new materials containing metallic ions in unusual high valence states such as Fe4+. In Fe4+-oxides, oxygen holes caused by the deep d level in metallic ionsgive rise to the unique properties unlike in Fe2+- and Fe3+-oxides. In this project perovskite-type Sr1-xBaxFe4+O3 and BaFe4+1-xMxO3 (M=Sn4+, Co4+…) have been successfully synthesized, and their magnetic properties have been investigated.

Research Products

• [Journal Article] BaFeO3, A Ferromagnetic Iron Oxide, Angew. (2011)
  • Author(s): N. Hayashi, T. Yamamoto, H. Kageyama, M. Nishi, Y. Watanabe, T. Kawakami, Y. Matsushita, A. Fujimori, and M. Takano
  • Journal Title: Chem. Int. Ed. Engl. Volume: 50 Pages: 12547-12550
  • DOI: DOI:10.1002/anie.201105276
  • Peer Reviewed
• [Journal Article] 強磁性ペロブスカイト鉄酸化物の合成
  • Author(s): 林直顕、高野幹夫
  • Journal Title: FC Report Volume: Vol.30No.3 Pages: 100-103
• [Presentation] 立方晶ペロブスカイト型 BaFeO3のメスバウア効果 (2012)
  • Author(s): 林直顕、山本隆文、北田敦、陰山洋、高野幹夫
  • Organizer: 第49回アイソトープ・放射線 研究発表会
  • Place of Presentation: 東京大学
  • Year and Date: 2012-07-10
• [Presentation] Magnetic Properties of a New Fe4+-Perovskite,BaFeO3, and Its Related Compounds (2011)
  • Author(s): N. Hayashi, A. Kitada, T. Yamamoto, H. Kageyama, and M. Takano
  • Organizer: Magnetic Properties of a New Fe4+-Perovskite,BaFeO3, and Its Related Compounds
  • Place of Presentation: Kobe Convention Center
  • Year and Date: 2011-09-29
• [Presentation] Magnetic properties of New Fe4+-Perovskite, SrFeO3-BaFeO3Solid Solution (2011)
  • Author(s): N. Hayashi, F. Yamamoto, A. Kitada, H. Kageyama, M. Takano
  • Organizer: The 17th International Symposium on the reactivity of solids
  • Place of Presentation: ICMCB Pessac, Bordeaux, France
  • Year and Date: 2011-06-27
• [Presentation] ペロブスカイト型(Sr, Ba)FeO3 固溶体の磁気物性 (2011)
  • Author(s): 林直顕、北田敦、陰山洋,高野幹夫
  • Organizer: 粉体粉末冶金協会「平成23年度春季大会」
  • Place of Presentation: 早稲田大学
  • Year and Date: 2011-06-01
• [Presentation] 立方晶 BaFeO3 の磁気的性質 (2010)
  • Author(s): 林直顕、山本隆文、陰山洋、遠山貴己、西正和、 高野幹夫
  • Organizer: 立方晶 BaFeO3 の磁気的性質
  • Place of Presentation: 京都大学
  • Year and Date: 2010-11-09
• [Presentation] BaFeO3 の高圧下メスバウアー分光 (2010)
  • Author(s): 田中秀明、 川上隆輝、 林直顕、 高野幹夫
  • Organizer: 日本物理学会 2010 年秋季大会
  • Place of Presentation: 大阪府立大学
  • Year and Date: 2010-09-25
• [Presentation] Synthesis and Magnetism of New Fe4+-Perovskite, Cubic BaFeO3 (2010)
  • Author(s): N. Hayashi, T. Yamamoto, H. Kageyama, T.Tohyama, M. Nishi, M. Takano
  • Organizer: Inorganic Materials Conference 2010
  • Place of Presentation: Le Bellevue congress and exhibition centre, Biarritz, France
  • Year and Date: 2010-09-13