| 研究課題/領域番号 |
21K14397
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| 研究種目 |
若手研究
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| 配分区分 | 基金 |
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| 審査区分 |
小区分26010:金属材料物性関連
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| 研究機関 | 国立研究開発法人物質・材料研究機構 |
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研究代表者 |
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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| 研究期間 (年度) |
2021-04-01 – 2023-03-31
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| 研究課題ステータス |
中途終了 (2022年度)
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| 配分額 *注記 |
4,680千円 (直接経費: 3,600千円、間接経費: 1,080千円)
2023年度: 1,040千円 (直接経費: 800千円、間接経費: 240千円)
2022年度: 2,210千円 (直接経費: 1,700千円、間接経費: 510千円)
2021年度: 1,430千円 (直接経費: 1,100千円、間接経費: 330千円)
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| キーワード | 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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| 研究開始時の研究の概要 |
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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| 研究実績の概要 |
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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