| NiO／NiFeCo／Cu／NiFeCo自旋阀结构的巨磁电阻效应及影响因素的研究 |
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| 引用本文： | 卢志红 李铁. NiO／NiFeCo／Cu／NiFeCo自旋阀结构的巨磁电阻效应及影响因素的研究[J]. 功能材料, 1999, 30(3): 256-257,260 |
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| 作者姓名： | 卢志红 李铁 |
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| 作者单位： | 中国科学院冶金所光盘与磁性材料实验室，功能材料国家重点实验室，华中理工大学固体电子学系 |
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| 摘 要： | 用电子蒸发的方法制备ＮｉＯ／ＮｉＦｅＣ／Ｃｕ／ＮｉＦｅＣｏ自旋阀多层膜，通过磁场中退火得到好的偏置型自旋阀ＧＭＲ效应。通过对制备态以及磁场退火后样品的ＭＲ曲线的研究，讨论了交换耦合作用，单层磁性能以及层间耦合作用对材料ＧＭＲ效应的大小和磁场灵敏度的影响，得出提高交换耦合作用，改善单层磁性能和尽可能减小层间耦合将有得于得到高性能的偏置型自旋阀ＧＭＲ材料的结论。
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| 关 键 词： | 自旋阀 交换耦合作用 巨磁电阻效应 多层膜 |
Study on Influence Factors of GMR Effect in NiO/NiFeCo/Cu/NiFeCo Spin-Valves |
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| LU Zhihong,LI Tie,QIU Jinjun,XUN Kun,SHENG Honglie,YAO Xinhua,SHENG Songhua,LIN Gengqi,LI Zuoyi,SHENG Defang Optic Disc and Magnetic Material Lab., Function Material Lab.,Shanghai Metallurgy Institute,Chinese Academy of Sciennces,Shanghai. Study on Influence Factors of GMR Effect in NiO/NiFeCo/Cu/NiFeCo Spin-Valves[J]. Journal of Functional Materials, 1999, 30(3): 256-257,260 |
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| Authors: | LU Zhihong LI Tie QIU Jinjun XUN Kun SHENG Honglie YAO Xinhua SHENG Songhua LIN Gengqi LI Zuoyi SHENG Defang Optic Disc Magnetic Material Lab. Function Material Lab. Shanghai Metallurgy Institute Chinese Academy of Sciennces Shanghai |
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| Affiliation: | LU Zhihong1,LI Tie2,QIU Jinjun3,XUN Kun1,SHENG Honglie2,YAO Xinhua1,SHENG Songhua2,LIN Gengqi3,LI Zuoyi3,SHENG Defang1 1 Optic Disc and Magnetic Material Lab.,2 Function Material Lab.,Shanghai Metallurgy Institute,Chinese Academy of Sciennces,Shanghai,2 |
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| Abstract: | NiO/NiFeCo/Cu/NiFeCo spinvalve multilayers were fabricated by electrobeam evaporation and annealed in magnetic field.It was found that through annealing the multilayers showed better exchangebiased spinvalve GMR characters.The effects of the exchange coupling,the properties of the magnetic layers and the ferromagnetic coupling between the magnetic layers on the GMR effect and the sensitivity of the multilayers were discussed.It was concluded that the enhancement of the exchange coupling,the improvement of the soft magnetic properties of the magnetic layers and the decrease of the ferromagnetic coupling between the free layer and the pinned layer were important to get good exchange biased spinvalves. |
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| Keywords: | exchangebiased spinvalve GMR effect exchange coupling ferromagnetic coupling |
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