| GdFeCo/DyFeCo交换耦合两层薄膜磁化方向转变的研究 |
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| 引用本文： | 张约品,王现英,林更琪,李震,李佐宜,沈德芳,干福熹.GdFeCo/DyFeCo交换耦合两层薄膜磁化方向转变的研究[J].物理学报,2004,53(2):614-619. |
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| 作者姓名： | 张约品 王现英 林更琪 李震 李佐宜 沈德芳 干福熹 |
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| 作者单位： | (1)华中科技大学电子科学与技术系，武汉 430074; (2)中国科学院上海光学精密机械研究所，上海 201800; (3)中国科学院上海光学精密机械研究所，上海 201800;宁波大学光电子功能材料研究所，宁波 315211 |
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| 摘 要： | 用磁控溅射法制备了GdFeCo/DyFeCo交换耦合两层薄膜，对交换耦合两层薄膜变温磁化方向进行了研究.结果表明读出层GdFeCo随温度上升从平面磁化转变成垂直磁化，转变过程中主要受饱和磁矩(Ms)的影响.在GdFeCo的补偿温度附近，读出层的磁化强度近于零，退磁场能减小，并在交换耦合的作用下，使读出层的磁化方向发生转变，制备的交换耦合两层薄膜具有中心孔磁超分辨效应.
关键词：
磁光记录
交换耦合两层薄膜
磁化
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| 关 键 词： | 磁光记录 交换耦合两层薄膜 磁化 |
| 收稿时间： | 2003-03-14 |
Investigation of magnetization change in GdFeCo/DyFeCo exchange-coupled films |
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| Zhang Yue-Pin,Wang Xian-Ying,Lin Geng-Qi,Li Zhen,Li Zuo-Yi,Shen De-Fang and Gan Fu-Xi.Investigation of magnetization change in GdFeCo/DyFeCo exchange-coupled films[J].Acta Physica Sinica,2004,53(2):614-619. |
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| Authors: | Zhang Yue-Pin Wang Xian-Ying Lin Geng-Qi Li Zhen Li Zuo-Yi Shen De-Fang and Gan Fu-Xi |
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| Abstract: | The exchange-coupled films (GdFeCo/DyFeCo) were prepared by sputtering method. The magnetization transitions caused by temperature changes had heen investigated for the films.The results indicate that the magnetization direction of the readout layer changes from in-plane to perpendicular when temperature increases.The transition occurs mainly as a result of the changes in the saturation magnetization. When the temperature increase to near the compensation temperature, the saturation magnetization and the demagnetizing energy of the GdFeCo layer decrease, With the exchange-coupled interaction,the magnetization direction of the readout layer changes.The films can be used for center aperture detection type magnetically induced super resolution. |
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| Keywords: | magneto-optical recording exchange-coupled double layers magnetization |
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