| Project/Area Number |
21244051
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| Research Category |
Grant-in-Aid for Scientific Research (A)
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| Allocation Type | Single-year Grants |
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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 |
NODA Yukio 東北大学, 多元物質科学研究所, 教授 (80127274)
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| Co-Investigator(Kenkyū-buntansha) |
KIMURA Hiroyuki 東北大学, 多元物質科学研究所, 准教授 (50312658)
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| Project Period (FY) |
2009 – 2011
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| Project Status |
Completed (Fiscal Year 2011)
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| Budget Amount *help |
¥8,580,000 (Direct Cost: ¥6,600,000、Indirect Cost: ¥1,980,000)
Fiscal Year 2011: ¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
Fiscal Year 2010: ¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
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| Keywords | 強相関系 / マルチフェロイック / 中性子回折 / 構造物性 / 強誘電性 / 磁気秩序 / フルチフェロイック |
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| Research Abstract |
The purpose of the present study is to reveal the origin of the large magneto-electric effect in multiferroic compounds RMn2O5 using magnetic and crystal structure analysis. In order to perform this investigation, we developed the technique of high-pressure neutron magnetic structure analysis and the super accurate crystal structure analysis using synchrotron x-ray. Furthermore, we developed a large two-dimensional neutron detector (2DPSD)to perform rapid and effective neutron experiments. As a result, we have discovered new type magnetic structure accompanied by the ferroelectric phase. In addition, we determined the space group of the ferroelectric phase of YMn2O5.
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