| Project/Area Number |
21K20508
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| Research Category |
Grant-in-Aid for Research Activity Start-up
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| Allocation Type | Multi-year Fund |
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| Review Section |
0402:Nano/micro science, applied condensed matter physics, applied physics and engineering, and related fields
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| Research Institution | National Institutes for Quantum Science and Technology |
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Principal Investigator |
BENTLEY PHILLIP DAVID 国立研究開発法人量子科学技術研究開発機構, 高崎量子応用研究所 量子機能創製研究センター, 博士研究員 (40906260)
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| Project Period (FY) |
2021-08-30 – 2023-03-31
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| Project Status |
Completed (Fiscal Year 2022)
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| Budget Amount *help |
¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
Fiscal Year 2022: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2021: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
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| Keywords | Heusler Compound / Ferrimagnetism / PMA / Half-metallicity / MRAM / High Spin Polarization / Ferrimagnetic / Heusler Alloys / Small Magnetic Moment / Cubic Full-Heusler / Half-metal / New Materials / Ferrimagnetic Heusler / 2D materials / Graphene / SPMDS |
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| Outline of Research at the Start |
This project aims to use this funding to explore the group of Mn2YZ ferrimagnetic Heusler alloys, how they interact with 2D spin transport materials (2DMs), how such heterostructures can be tailored for spin-photonic applications. Within a wide variety of Mn2YZ Heusler alloys, this project will specifically explore the novel Xa crystal phase of Mn2FeGa (MFG). The Xa cubic structure of MFG is predicted to be completely spin polarized at the Fermi level and heterostructures coupled with graphene will lead to novel spin-photonic devices such as optically-driven non-volatile memories and logics.
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| Outline of Final Research Achievements |
I explored and developed a novel cubic phase of the ferrimagnetic Heusler compound Mn2FeGa (MFG) with the ultimate aim of coupling this material with 2D materials such as graphene for spin photonic applications. This newly developed material shows several favourable properties for spintronic applications including: significant perpendicular magnetic anisotropy (PMA), high chemical ordering, and high spin polarization. These properties demonstrate a material suitable for spintronic applications such as magnetic random-access memory (MRAM). These results have led to a publication which is currently under review, receiving positive feedback and is soon to be published. Furthermore, these results have led to a patent for cubic MFG/Cr/MgO buffer layers which is currently in press. Finally, these results have been presented at several national conferences and have attracted significant attention among the spintronics community.
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| Academic Significance and Societal Importance of the Research Achievements |
Cubic MFG extraordinary magnetic properties such as its large PMA and high spin polarization make it a very suitable candidate for spintronic application such as MRAM. This will help us overcome current limits on magnetic memory and MFG is likely to be a leading material in next-generation memory.
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