Electronic properties in novel high-pressure perovskite phases

2010 Fiscal Year Final Research Report

• Project/Area Number: 21750062
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Single-year Grants
• Research Field: Inorganic chemistry
• Research Institution: Ehime University
• Principal Investigator: YAMADA Ikuya Ehime University, 大学院・理工学研究科, 助教 (30378880)
• Project Period (FY): 2009 – 2010
• Keywords: 超高圧合成 / 新物質探索 / ペロブスカイト / 電子物性 / 結晶構造解析

Research Abstract

Several novel perovskite oxides were successfully obtained by using high-pressure synthesis method. In particular, more than 10 novel compounds in A-site-ordered perovksites AA'_3B_4O_<12> were obtained. Among them, the iron-based perovskite SrCu_3Fe_4O<12> demonstrated negative thermal expansion.

Research Products

• [Journal Article] CaCu3Pt4O12: The First Perovskite with the B Site Fully Occupied by Pt4+ Inorganic Chemistry (2010)
  • Author(s): Ikuya Yamada, Yuka Takahashi, Kenya Ohgushi, Norimasa Nishiyama, Ryoji Takahashi, Kohei Wada, Takehiro Kunimoto, Hiroaki Ohfuji, Yohei Kojima, Toru Inoue, Tetsuo Irifune
  • Journal Title: 49巻 Pages: 6778-6780
  • Peer Reviewed
• [Journal Article] Angewandte Chemie International Edition "Giant Negative Thermal Expansion in the Iron Perovskite SrCu3Fe4O12"
  • Author(s): Ikuya Yamada, Kazuki Tsuchida, Kenya Ohgushi, Naoaki Hayashi, Jungeun Kim, Naruki Tsuji, Ryoji Takahashi, Masafumi Matsushita, Norimasa Nishiyama, Toru Inoue, Tetsuo Irifune, Kenichi Kato, Masaki Takata, Mikio Takano
  • Journal Title: 印刷中
  • Peer Reviewed
• [Presentation] Giant Negative Thermal Expansion in Novel Iron Perovskite (2011)
  • Author(s): 山田幾也
  • Organizer: International Workshop on Novel Superconductors and Super Materials 2011 (NS2 2011)
  • Place of Presentation: 東京
  • Year and Date: 2011-03-07
• [Presentation] Extremely high pressure synthesis, structure, and physical properties of novel A-site ordred perovskites (2010)
  • Author(s): 山田幾也
  • Organizer: 2010環太平洋化学国際会議(PACIFICHEM2010)
  • Place of Presentation: Honolulu
  • Year and Date: 2010-12-17
• [Presentation] A サイト秩序型鉄ペロブスカイトの高圧合成・構造・磁性 (2010)
  • Author(s): 山田幾也
  • Organizer: 日本物理学会第65回年次大会、
  • Place of Presentation: 岡山
  • Year and Date: 2010-03-23
• [Presentation] 新奇A サイト秩序型鉄ペロブスカイトの構造・磁性 (2010)
  • Author(s): 城健太郎、山田幾也、他
  • Organizer: 日本物理学会第65回年次大会
  • Place of Presentation: 岡山
  • Year and Date: 2010-03-23
• [Presentation] NdFeAsO1-yの超高圧合成及び温度・圧力安定性 (2010)
  • Author(s): 栗木裕行、山田幾也、他
  • Organizer: 日本物理学会第65回年次大会
  • Place of Presentation: 岡山
  • Year and Date: 2010-03-20
• [Presentation] 超高圧合成法による新奇A サイト秩序型ペロブスカイトの探索と構造・物性 (2010)
  • Author(s): 山田幾也
  • Organizer: 第35回化合物新磁性材料研究会
  • Place of Presentation: 東京
  • Year and Date: 2010-01-28
• [Presentation] 高温高圧下における鉄ニクタイド化合物の安定性と超高圧合成法による新物質探索 (2009)
  • Author(s): 山田幾也
  • Organizer: 公開シンポジウム「新規材料による高温超伝導基盤技術」
  • Place of Presentation: 東京
  • Year and Date: 2009-12-12
• [Presentation] 超高圧を用いた新奇A サイト秩序型Ti ペロブスカイトの探索と構造・物性 (2009)
  • Author(s): 城健太郎、山田幾也、他
  • Organizer: 日本物理学会2009年秋季大会
  • Place of Presentation: 熊本
  • Year and Date: 2009-09-26
• [Presentation] 超高圧を用いた新奇A サイト秩序型ペロブスカイト(A'=Pd)の探索 (2009)
  • Author(s): 山田幾也
  • Organizer: 日本物理学会2009年秋季大会
  • Place of Presentation: 熊本
  • Year and Date: 2009-09-25