2007年4月
Microwave-assisted magnetization switching of Ni80Fe20 in magnetic tunnel junctions
APPLIED PHYSICS LETTERS
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- 巻
- 90
- 号
- 15
- 開始ページ
- 152503-1
- 終了ページ
- 152503-3
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1063/1.2720746
- 出版者・発行元
- AMER INST PHYSICS
Microwave-assisted magnetization switching was investigated using Fe30Co70/AlOx/Ni80Fe20 magnetic tunnel junctions incorporated with a coplanar waveguide. Coercivity field of Ni80Fe20 layer was dramatically reduced in a small amplitude microwave. The authors eliminated the thermal effect in coercivity reduction by comparing two types of measurements which are with and without spin precession in the presence of microwave. It was found that the coercivity reduction depends on both frequency and power of the microwave. The numerical simulation based on Landau-Lifshitz-Gilbert equation reproduced the trend of the experimental data. The results indicate that microwave can be an efficient means to switch the magnetization of a thin film. (c) 2007 American Institute of Physics.
- リンク情報
- ID情報
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- DOI : 10.1063/1.2720746
- ISSN : 0003-6951
- Web of Science ID : WOS:000245690700067