2019 Fiscal Year Final Research Report
Search for new multiferroics in charge-ordered manganites
| Project/Area Number |
17K14101
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Applied materials
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| Research Institution | Iwate University |
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Principal Investigator |
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| Project Period (FY) |
2017-04-01 – 2020-03-31
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| Keywords | マルチフェロイクス / 磁気誘電効果 / 圧力効果 |
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| Outline of Final Research Achievements |
Because charge-ordered manganite Ca(Mn,Sb)O3 exhibits a dielectric anomaly sensitive to magnetic field, Ca(Mn,Sb)O3 is hopeful as a new multiferroic material which is applicable to a memory device. In this study, for achieving a device which is active at room temperatures, we investigated a factor which enhances the dielectric anomaly temperature of Ca(Mn,Sb)O3. The chemical and physical pressure effects on the dielectric anomaly temperature indicate that the tolerance factor plays an important role on the dielectric properties in Ca(Mn,Sb)O3.
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| Free Research Field |
固体物理学
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| Academic Significance and Societal Importance of the Research Achievements |
元素置換によって最高で170 Kもの高温において磁気誘電効果を誘起できたのみならず、その起源を探ることで今後より高機能な新物質を開拓するための方策も提案できた。従って、本研究はマルチフェロイクスの実用化を加速できたという意義を持つ。
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