Significant Reduction of Switching Field and its Distribution in Co/Pt Nanodots with Assistance of Radio Frequency Field
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概要
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Microwave assisted magnetization switching (MAS) is a key technology for future ultra high-density magnetic recording. To explore the feasibility of MAS, we have studied how the magnetization switching behavior of individual Co/Pt multilayer nanodots with perpendicular magnetic anisotropy is modified by the application of rf fields. It is found that the behavior depends on the rf field amplitude. For a large rf field but much smaller than the effective perpendicular anisotropy field, the switching field can be reduced remarkably. Moreover, the broad dispersion of the switching field in the absence the of rf field also becomes quite narrow.
- 2012-09-25
著者
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Okamoto Satoshi
Institute Of Multidisciplinary Research For Advanced Materials Tohoku University
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Kitakami Osamu
Institute Of Multidisciplinary Research For Advanced Materials Tohoku University
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Shimatsu Takehito
Research Institute Of Electrical Communication Tohoku University
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Kikuchi Nobuaki
Institute Of Multidisciplinary Research For Advanced Materials Tohoku University
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Kikuchi Nobuaki
Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Sendai 980-8577, Japan
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FURUTA Masaki
Institute of Multidisciplinary Research for Advanced Materials, Tohoku University
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Shimatsu Takehito
Research Institute of Electrical Communication, Tohoku University, Sendai 980-8577, Japan
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Okamoto Satoshi
Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Sendai 980-8577, Japan
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Furuta Masaki
Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Sendai 980-8577, Japan
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Kitakami Osamu
Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Sendai 980-8577, Japan
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