2018 Fiscal Year Annual Research Report
| Project/Area Number |
16F16362
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| Research Institution | Osaka University |
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Principal Investigator |
鈴木 義茂 大阪大学, 基礎工学研究科, 教授 (50344437)
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| Co-Investigator(Kenkyū-buntansha) |
CHO JAEHUN 大阪大学, 基礎工学研究科, 外国人特別研究員
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| Project Period (FY) |
2016-11-07 – 2019-03-31
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| Keywords | magnetism with E-field / spinwaves / magnetic skyrmions / skyrmion dynamics |
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| Outline of Annual Research Achievements |
Electric field control of magnetic properties in metallic ferromagnets is attracting much attention because of its potential to be a key technology to produce ultralow energy consumption spintronics devices. Especially voltage induced magnetic anisotropy changes in ferromagnetic metal system at room temperature, have been widely studied targeting an ultra-low power MRAM applications. It is widely studied voltage induced magnetic properties, but the voltage control of the exchange interaction in 3d ferromagnets is under discussion. Beside of this, such voltage control in Aex may provide us new functionality of magnetic materials such as voltage switching of ferromagnetism, creation and annihilation of skyrmions, control of magnon velocity, etc. So, JSPS fellow had investigated electric field induced magnetic properties changes on the magnetic tunnel junction with perpendicular magnetic free layer.
Skyrmions are topologically protected spin textures which often originated from asymmetric exchange coupling as known Dzyaloshinskii-Moriya interaction. Recently, it has been attracted due to the possibility of the skyrmion based information devices and information storage units. The motion of the skyrmion on two-dimensional film can be described by a modified version of Newton’s equation. JSPS fellow had explored on the skyrmions dynamics under various force such as gradient external magnetic field, gradient magnetic parameters, applying current and thermal energy.
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| Research Progress Status |
平成30年度が最終年度であるため、記入しない。
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| Strategy for Future Research Activity |
平成30年度が最終年度であるため、記入しない。
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