Novel physical properties of transition metal fluorides with spin frustration and competing degrees of freedom
Project/Area Number |
24540345
|
Research Category |
Grant-in-Aid for Scientific Research (C)
|
Allocation Type | Multi-year Fund |
Section | 一般 |
Research Field |
Condensed matter physics II
|
Research Institution | Kyoto University |
Principal Investigator |
UEDA Hiroaki 京都大学, 理学(系)研究科(研究院), 准教授 (10373276)
|
Project Period (FY) |
2012-04-01 – 2015-03-31
|
Project Status |
Completed (Fiscal Year 2014)
|
Budget Amount *help |
¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2014: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2013: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2012: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
|
Keywords | スピンフラストレーション / 電荷秩序 / フッ化物 / パイロクロア / フラストレーション / ヤーンテラー効果 |
Outline of Final Research Achievements |
As transition metal fluorides that have frustrated lattices, we have synthesized modified pyrochlores and double-perovskites and measured their physical properties. And then, we have discovered new phenomena originating on competing degrees of freedom. The modified pyrochlores have a charge degree of freedom, and they exhibits charge orderings and/or magnetic orderings of different spins. In the double-perovskites, we have observed various structural transitions, which are driven by the competition between Jahn-Teller instability of magnetic ions and lattice instability of perovskites owing to the space among constituent ions.
|
Report
(4 results)
Research Products
(18 results)