Fabrication of barium titanate based ferroelectrics with the high-Tc and the high-Ps

• Project/Area Number: 25790048
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Crystal engineering
• Research Institution: Hiroshima University
• Principal Investigator: Magome Eisuke 広島大学, 理学(系)研究科(研究院), 助教 (40408696)
• Project Period (FY): 2013-04-01 – 2016-03-31
• Project Status: Completed (Fiscal Year 2015)
• Budget Amount: ¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000); Fiscal Year 2015: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000); Fiscal Year 2014: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000); Fiscal Year 2013: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
• Keywords: 無容器法 / 強誘電体材料 / 高温実験 / 放射光回折実験 / 結晶構造解析 / チタン酸バリウム

Outline of Final Research Achievements

Fabrication of barium titanate based ferroelectrics with the high-Tc and the high-Ps by the containerless processing was performed. We developed the aerodynamic levitation furnace which enables us to levitate and melt a sample about 1-3 mm in diameter in containerless condition. A new technique to observe the temperature dependence of crystal structures in the high temperature region was developed. Aerodynamic levitation furnace for structural study of high temperature crystals has been installed in the X-ray diffractometer at the SAGA Light Source. The lattice parameters and the expansion coefficients of Al2O3 in the high temperature region was revealed.

Research Products

• [Journal Article] 大過冷却融液から結晶化した準安定相六方晶鉄酸化物 (2016)
  • Author(s): 増野敦信，馬込栄輔，森吉千佳子
  • Journal Title: 日本結晶学会誌 Volume: 58
  • NAID: 130005159760
  • Peer Reviewed
• [Presentation] 無容器法による高温下での構造計測と準安定物質の合成 (2016)
  • Author(s): 馬込栄輔, 隅谷和嗣, 岡島敏浩
  • Organizer: 第33回強誘電体応用会議
  • Place of Presentation: コープイン京都 (京都府京都市)
  • Year and Date: 2016-05-25
• [Presentation] ガスジェット浮遊炉を用いた超高温下物質の構造計測 (2016)
  • Author(s): 馬込栄輔
  • Organizer: 第29回日本放射光学会年会・放射光科学合同シンポジウム
  • Place of Presentation: 柏の葉カンファレンスセンター(千葉県柏市)
  • Year and Date: 2016-01-09
• [Presentation] Fabrication of Barium Titanate Based Ferroelectrics by Containerless Processing (2014)
  • Author(s): Eisuke Magome, Kazushi Sumintani, Koutaro Ishiji, Toshihiro Okajima, Chikako Moriyoshi, Yoshihiro Kuroiwa
  • Organizer: 23rd Congress and General Assembly of the Union of Crystallography
  • Place of Presentation: Montreal Convention Centre (Montreal, Canada)
  • Year and Date: 2014-08-05 – 2014-08-12
• [Presentation] Development of In-situ Structural Measurement System using Aerodynamic Levitation Furnace at SAGA-LS (2014)
  • Author(s): Eisuke Magomea, Kazushi Sumitani, Koutaro Ishiji, Toshihiro Okajima, Yoshihiro Kuroiwa
  • Organizer: The 18th Hiroshima International Symposium on Synchrotron Radiation
  • Place of Presentation: 広島大学学士会館(広島県東広島市)