Material science on post-perovskite phases
| Project/Area Number |
26287073
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Partial Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Condensed matter physics II
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| Research Institution | Tohoku University |
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Principal Investigator |
Ohgushi Kenya 東北大学, 理学(系)研究科(研究院), 教授 (30455331)
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| Project Period (FY) |
2014-04-01 – 2017-03-31
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| Project Status |
Completed (Fiscal Year 2016)
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| Budget Amount *help |
¥17,550,000 (Direct Cost: ¥13,500,000、Indirect Cost: ¥4,050,000)
Fiscal Year 2016: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2015: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2014: ¥15,210,000 (Direct Cost: ¥11,700,000、Indirect Cost: ¥3,510,000)
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| Keywords | ポストペロブスカイト / 磁性 / 量子コンパス型相互作用 / 強相関電子系 / 共鳴X線散乱 / イリジウム酸化物 |
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| Outline of Final Research Achievements |
We have performed exploratory synthesis and characterization of materials with the post-perovskite structure. We carried out resonant x-ray scattering experiments for CaIrO3, and clarified a dispersion relationship of spin wave and orbital excitation. We also developed a new solid solution, which exhibits the post-perovskite transition as a function of chemical composition. Our detailed analysis of structural data indicates that the post-perovskite transition is triggered by the ionic radius mismatch and that there is a novel noncentrosymmetric metallic phase with the tetragonal perovskite structure near the post-perovskite transition.
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Report
(4 results)
Research Products
(9 results)
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[Journal Article] A compact and versatile dynamic flow cryostat for photon science2016
Author(s)
Peter J. E. M. van der Linden, Marco Moretti Sala, Christian Henriquet, Matteo Rossi, Kenya Ohgushi, François Fauth, Laura Simonelli, Carlo Marini, Edmundo Fraga, Claire Murray, Jonathan Potter, and Michael Krisch
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Journal Title
Rev. Sci. Instrum.
Volume: 87
Issue: 11
Pages: 115103-115103
DOI
Related Report
Peer Reviewed / Int'l Joint Research
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