Development of Dy-free Magnets Applicable at High Temperatures by Nano-Manipulation
| Project/Area Number |
25289090
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Partial Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Electronic materials/Electric materials
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| Research Institution | Nagasaki University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
中野 正基 長崎大学, 工学研究科, 教授 (20274623)
森村 隆夫 長崎大学, 工学研究科, 准教授 (30230147)
柳井 武志 長崎大学, 工学研究科, 助教 (30404239)
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| Project Period (FY) |
2013-04-01 – 2017-03-31
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| Project Status |
Completed (Fiscal Year 2016)
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| Budget Amount *help |
¥17,810,000 (Direct Cost: ¥13,700,000、Indirect Cost: ¥4,110,000)
Fiscal Year 2016: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2015: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Fiscal Year 2014: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Fiscal Year 2013: ¥11,440,000 (Direct Cost: ¥8,800,000、Indirect Cost: ¥2,640,000)
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| Keywords | ナノコンポジット / 磁石 / Sm-Co / 積層構造 / 磁性体 |
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| Outline of Final Research Achievements |
We developed multi-layered nanocomposite thick film-magnets composed of 10-nm-thick Sm-Co and Fe layers stacked alternately approximately 1000 layers by the pulsed laser deposition method. The magnets were isotropic and (BH)max value of 100 kJ/m3 was obtained, when the substrates were not heated. Thin buffer layers such as Ta and Cu between Sm-Co and Fe layers improved their magnetic properties significantly. Furthermore, the application of the two-step annealing method enabled us to obtain anisotropic multi-layered thick film-magnets whose easy axis of magnetization lies in the film-plane.
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Report
(5 results)
Research Products
(122 results)
