2019 Fiscal Year Final Research Report
Design of light- or electromagnetic-wave-correlating phase transition materials and research of their advanced functionalities
| Project/Area Number |
15H05697
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| Research Category |
Grant-in-Aid for Specially Promoted Research
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| Allocation Type | Single-year Grants |
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| Review Section |
Science and Engineering
Chemistry
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| Research Institution | The University of Tokyo |
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Principal Investigator |
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| Project Period (FY) |
2015 – 2020
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| Keywords | 相転移 / 電磁波 / 物性化学 |
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| Outline of Final Research Achievements |
This project aims to develop novel phase transition materials that correlate with light or electromagnetic waves, and new functional materials contributing to environmental and energy problems were investigated. Particularly, research was promoted to pioneer a new research field of “millimeter wave materials science”. Through this work, various materials were successfully developed, such as light-induced metal-semiconductor phase transition material, photoswitchable superionic conductor, light-induced ferroelectric material, and world smallest hard ferrite nanoparticles exhibiting multiferroic property and magnetization induced second harmonic generation (MSHG). In addition, various millimeter wave absorbers were developed based on metal oxide magnets and magnetic metal complexes. Furthermore, pico-second tilting of the magnetization induced by millimeter waves was observed, which marked the beginning of the new field of “millimeter wave materials science”.
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| Academic Significance and Societal Importance of the Research Achievements |
本研究で行った外部刺激による金属-半導体転移や超イオン伝導性の光スイッチングなどの新規現象は、固体材料分野の進展に大きく貢献すると考えられる。また、世界最小ハードフェライト磁性粒子は、次世代の磁気テープへの展開が期待されるとともに、ピコ秒オーダーのミリ波応答磁性は、日本発の高密度磁気記録への可能性を拓くと期待される。世界初の光誘起超イオン伝導性体に関しても電池材料分野において新しい展開を拓くと期待される。
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| Free Research Field |
物理化学
固体材料
機能物性化学
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