| Percolation—related magnetic coupling and magnetoresistance properties in Fe／Si1—xAgx multilayers |
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| 引用本文： | 王海,唐云俊,李祥,陈熹,王荫君,朱涛,赵宏武,詹文山.Percolation—related magnetic coupling and magnetoresistance properties in Fe／Si1—xAgx multilayers[J].中国物理 B,2002,11(2):183-187. |
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| 作者姓名： | 王海 唐云俊 李祥 陈熹 王荫君 朱涛 赵宏武 詹文山 |
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| 作者单位： | State Key Laboratory for Magnetism, Institute of Physics and Center of Condensed Matter Physics, Chinese Academy of Sciences, Beijing 100080, China;State Key Laboratory for Magnetism, Institute of Physics and Center of Condensed Matter Physics, Chinese Academy of Sciences, Beijing 100080, China;State Key Laboratory for Magnetism, Institute of Physics and Center of Condensed Matter Physics, Chinese Academy of Sciences, Beijing 100080, China;State Key Laboratory for Magnetism, Institute of Physics and Center of Condensed Matter Physics, Chinese Academy of Sciences, Beijing 100080, China;State Key Laboratory for Magnetism, Institute of Physics and Center of Condensed Matter Physics, Chinese Academy of Sciences, Beijing 100080, China;State Key Laboratory for Magnetism, Institute of Physics and Center of Condensed Matter Physics, Chinese Academy of Sciences, Beijing 100080, China;State Key Laboratory for Magnetism, Institute of Physics and Center of Condensed Matter Physics, Chinese Academy of Sciences, Beijing 100080, China;State Key Laboratory for Magnetism, Institute of Physics and Center of Condensed Matter Physics, Chinese Academy of Sciences, Beijing 100080, China |
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| 基金项目： | Project supported by the National Natural Science Foundation of China (Grant Nos. 59928101 and 59871063). |
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| 摘 要： | In this paper, we present a study of the magnetic coupling and magnetoresistance (MR) properties in Fe/Si1-xAgx multilayers with a granular Si1-xAgx spacer layer. We have found that, with increasing silver content (x) in a silicon matrix, the magnetic state of multilayers changes from a nonmagnetic coupling state to weak antiferromagnetic around the percolation point of the ～2.4 nm thick spacer Si1-xAgx. The MR measurements also reveal an abrupt increase of MR near the same percolation point. These changes are ascribed to the formation of the percolation path in the granular spacer.
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| 关 键 词： | 磁耦合振荡 金属多层结构 磁阻特性 |
| 收稿时间： | 2001-07-10 |
Percolation-related magnetic coupling and magnetoresistance properties in Fe/Si1-xAgx multilayers |
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| Wang Hai,Tang Yun-Jun,Li Xiang,Chen Xi,Wang Yin-Jun,Zhu Tao,Zhao Hong-Wu and Zhan Wen-Shan.Percolation-related magnetic coupling and magnetoresistance properties in Fe/Si1-xAgx multilayers[J].Chinese Physics B,2002,11(2):183-187. |
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| Authors: | Wang Hai Tang Yun-Jun Li Xiang Chen Xi Wang Yin-Jun Zhu Tao Zhao Hong-Wu and Zhan Wen-Shan |
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| Institution: | State Key Laboratory for Magnetism, Institute of Physics and Center of Condensed Matter Physics, Chinese Academy of Sciences, Beijing 100080, China |
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| Abstract: | In this paper, we present a study of the magnetic coupling and magnetoresistance (MR) properties in Fe/Si1-xAgx multilayers with a granular Si1-xAgx spacer layer. We have found that, with increasing silver content (x) in a silicon matrix, the magnetic state of multilayers changes from a nonmagnetic coupling state to weak antiferromagnetic around the percolation point of the ～2.4 nm thick spacer Si1-xAgx. The MR measurements also reveal an abrupt increase of MR near the same percolation point. These changes are ascribed to the formation of the percolation path in the granular spacer. |
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| Keywords: | interlayer coupling doping magnetoresistance |
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