2016年4月
Large Voltage-Induced Changes in the Perpendicular Magnetic Anisotropy of an MgO-Based Tunnel Junction with an Ultrathin Fe Layer
PHYSICAL REVIEW APPLIED
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- 巻
- 5
- 号
- 4
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1103/PhysRevApplied.5.044006
- 出版者・発行元
- AMER PHYSICAL SOC
We study the voltage control of perpendicular magnetic anisotropy in an ultrathin Fe layer sandwiched between the Cr buffer and MgO tunneling barrier layers. A high-interface magnetic anisotropy energy of 2.1 mJ/m(2) is achieved in the Cr/ultrathin Fe/MgO structure. A large voltage-induced perpendicular magnetic anisotropy change is observed under the negative-bias voltage applications for the case of the Fe layer thinner than 0.6 nm. The amplitude of the voltage-induced anisotropy energy change exhibits a strong Fe-thickness dependence and it reaches as high as 290 fJ/Vm. The observed high values of the surface anisotropy and voltage-induced anisotropy energy change demonstrate the feasibility of voltage-driven spintronic devices.
- リンク情報
- ID情報
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- DOI : 10.1103/PhysRevApplied.5.044006
- ISSN : 2331-7019
- ORCIDのPut Code : 26091825
- Web of Science ID : WOS:000374299900001
- ORCIDで取得されたその他外部ID : a:1:{i:0;a:1:{s:8:"other-id";s:19:"WOS:000374299900001";}}