Reserch on dynamical process of spinwave-assisted magnetization reversal and observation of spinwaves excited along thickness direction
| Project/Area Number |
26249052
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| Research Category |
Grant-in-Aid for Scientific Research (A)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Electron device/Electronic equipment
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| Research Institution | Keio University |
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Principal Investigator |
Nozaki Yukio 慶應義塾大学, 理工学部(矢上), 教授 (30304760)
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| Co-Investigator(Kenkyū-buntansha) |
渡邉 紳一 慶應義塾大学, 理工学部, 准教授 (10376535)
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| Project Period (FY) |
2014-04-01 – 2017-03-31
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| Project Status |
Completed (Fiscal Year 2016)
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| Budget Amount *help |
¥42,900,000 (Direct Cost: ¥33,000,000、Indirect Cost: ¥9,900,000)
Fiscal Year 2016: ¥5,980,000 (Direct Cost: ¥4,600,000、Indirect Cost: ¥1,380,000)
Fiscal Year 2015: ¥5,850,000 (Direct Cost: ¥4,500,000、Indirect Cost: ¥1,350,000)
Fiscal Year 2014: ¥31,070,000 (Direct Cost: ¥23,900,000、Indirect Cost: ¥7,170,000)
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| Keywords | 強磁性共鳴 / スピン波 / 磁気記録 / 非線形ダイナミクス / マイクロ波アシスト磁化反転 / 磁気光学効果 / 磁化反転 |
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| Outline of Final Research Achievements |
In order to study a magnetization switching assisted by a spin waves along a thickness direction of an exchange coupled composite (ECC) medium, we developed a micro-MOKE measurement system which enables to spatially resolve the magnetization dynamics. In addition, we succeeded to demonstrate a temporarily resolved observation of nonlinear magnetization dynamics in nonequilibrium state of nano-scaled ferromagnet. From the dependence of a critical switching frequency of an ECC medium on the strength of interlayer exchange coupling, we experimentally confirmed that the spin wave assisted magnetization reversal could be realized even in ultra-thin ECC media with a thickness of 16 nm.
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Report
(4 results)
Research Products
(40 results)
