| Project/Area Number |
21K14397
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| Research Category |
Grant-in-Aid for Early-Career Scientists
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| Allocation Type | Multi-year Fund |
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| Review Section |
Basic Section 26010:Metallic material properties-related
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| Research Institution | National Institute for Materials Science |
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Principal Investigator |
TOZMANKARANIKOLAS Pelin 国立研究開発法人物質・材料研究機構, 磁性・スピントロニクス材料研究拠点, NIMS特別研究員 (80868472)
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| Project Period (FY) |
2021-04-01 – 2023-03-31
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| Project Status |
Discontinued (Fiscal Year 2022)
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| Budget Amount *help |
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2023: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2022: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Fiscal Year 2021: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
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| Keywords | Thin film / Bulk / Coercivity / Phase diagram / Crystallography / Magnetism / SmFe12 / Magnetic properties / Microstructure / Sm-based alloys / Magnetization / Anisotropy field / Permanent magnet / Rare earth |
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| Outline of Research at the Start |
Novel alternative magnets will be explored for using at the elevated operating temperature of 100-200°C. For this purpose high magnetization and anisotropy field along with optimum microstructure and grain size will be achieved in SmFe12-and SmCo5- based compounds for developing anisotropic magnets.
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| Outline of Annual Research Achievements |
The second phase of the research proposal aims to develop the Sm-Fe-V phase diagram, which will enable the determination of the equilibrium between the hard magnetic SmFe12 phase and the liquid phase. This equilibrium is essential for achieving magnetic isolation of hard magnetic grains in the microstructure, which is a key factor in obtaining high coercivity. In pursuit of this goal, we conducted a systematic investigation of the magnetic, microstructure, and crystallographic properties of anisotropic SmxFebalV20 for for 5.7<x<10 and 0<y<30. By combining these results with a computationally modeled Sm-Fe-V phase diagram, we can uncover the relationship between the intergranular phases and the coercivity.
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