Investigation of giant magnetic anisotropy and coercivity in transition metal magnetic nano structures
| Project/Area Number |
25287077
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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 |
Condensed matter physics I
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| Research Institution | Kyushu University |
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Principal Investigator |
NAKAGAWA TAKESHI 九州大学, 総合理工学研究科(研究院), 准教授 (80353431)
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| Project Period (FY) |
2013-04-01 – 2016-03-31
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| Project Status |
Completed (Fiscal Year 2015)
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| Budget Amount *help |
¥17,420,000 (Direct Cost: ¥13,400,000、Indirect Cost: ¥4,020,000)
Fiscal Year 2015: ¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
Fiscal Year 2014: ¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000)
Fiscal Year 2013: ¥10,530,000 (Direct Cost: ¥8,100,000、Indirect Cost: ¥2,430,000)
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| Keywords | 表面 / 磁性 / 磁気異方性 / 磁気円二色性 / 走査トンネル顕微鏡 / 保磁力 / 表面磁性 / X線磁気円二色性 / ナノ磁性 / ナノ材料 / 表面・界面物性 / スピンエレクトロニクス |
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| Outline of Final Research Achievements |
Magnetic anisotropy and coercivity are important physical properties for magnetic materials. We have investigated Co and Fe single layer nano structure on a heavy metal W surfaces in order to enhance magnetic anisotropy and coercivity. We have successfully prepared single atomic wires of Co and Fe on W(112) surface, which show 10~100 times larger magnetic anisotropy energies compared to those for bulk materials and have giant coercivity of ~3 T. We have revealed that even for common 3d transition metals, Co and Fe, precise control of their nano structures give rise to large magnetic anisotropy and coercivity.
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Report
(4 results)
Research Products
(29 results)
