2016 Fiscal Year Final Research Report
Research on the voltage control of magnetic damping and magnetic anisotropy for power-efficient spin devices
| Project/Area Number |
26420295
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Electron device/Electronic equipment
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| Research Institution | Yamagata University |
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Principal Investigator |
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| Co-Investigator(Renkei-kenkyūsha) |
INABA Nobuyuki 山形大学, 理工学研究科, 教授 (50396587)
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| Project Period (FY) |
2014-04-01 – 2017-03-31
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| Keywords | スピントロニクス / 磁気記録 / 強磁性共鳴 / 磁気緩和係数 / 3d強磁性遷移金属 |
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| Outline of Final Research Achievements |
Voltage control of magnetic properties is considered to be the key for power-efficient spin devices.To achieve this, the microscopic origins of magnetic properties including magnetic damping and anisotropy should be elucidated. It is theoretically pointed out that one of the important factors is the electron scattering. We have investigated the contribution of electron scattering to the damping in Co-doped Fe single-crsytal thin films whose scattering rates are controlled by annealing or varying the temperature.We have found that, when the electron scattering rate increases, the magnetic damping is reduced at low temperature (77K), while it is enhanced at room temperature.The opposite dependencies of the magnetic damping on the electron scattering rate at low and room temperatures agree with the theoretical studies based on the linear response.
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| Free Research Field |
工学
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