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| 插入Bi层对NiFe/Cu/NiFe/FeMn自旋阀多层膜交换耦合的影响 | |
| 引用本文： | 朱逢吾,于广华,李明华,姜宏伟,赖武彦. 插入Bi层对NiFe/Cu/NiFe/FeMn自旋阀多层膜交换耦合的影响[J]. 金属学报, 2002, 38(6): 617-620 |
| 作者姓名： | 朱逢吾 于广华 李明华 姜宏伟 赖武彦 |
| 作者单位： | 1. 北京科技大学材料物理系,北京,100083 2. 北京科技大学材料物理系,北京,100083；中国科学院物理研究所,北京,100080 3. 中国科学院物理研究所,北京,100080 |
| 基金项目： | 国家自然科学基金19890310，北京市自然科学基金2012011资助项目 |
| 摘 要： | 对于NiFe/Cu/NiFe/FeMn自旋阀多层膜，Cu原子偏聚到NiFe/FeMn界面将导致自旋阀多层膜中NiFe/FeMn的交换耦合Hex下降，然而，少量的表面活化原子Bi被沉积到Cu层和被钉扎NiFe层之间。Cu原子在NiFe/FeMn界面的偏聚可以被抑制。而且，更重要的是Ta/NiFe/Cu/NiFe/FeMn/Ta自旋阀多层膜中的交换耦合场Hex可以被有效地提高。 |
| 关 键 词： | 层间偏聚 交换耦合场 表面活化原子 Bi XPS |
| 文章编号： | 0412-1961(2002)05-0617-04 |
| 修稿时间： | 2002-03-27 |
EFFECT OF INSETTING Bi LAYERS ON THE EXCHANGE COUPLING OF SPIN-VALVE NiFe/Cu/NiFe/FeMn |
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| ZHU Fengwu,YU Guanghua,LI Minghua,JIANG Hongwei,LAI Wuyan). EFFECT OF INSETTING Bi LAYERS ON THE EXCHANGE COUPLING OF SPIN-VALVE NiFe/Cu/NiFe/FeMn[J]. Acta Metallurgica Sinica, 2002, 38(6): 617-620 | |
| Authors: | ZHU Fengwu YU Guanghua LI Minghua JIANG Hongwei LAI Wuyan) |
| Affiliation: | ZHU Fengwu,YU Guanghua,LI Minghua,JIANG Hongwei,LAI Wuyan1)Department of Materials Physics,University of Science and Technology Beijing,Beijing 1000832)Institute of Physics,The Chinese Academy of Sciences,Beijing 100080Correspondent: ZHU Fengwu,p |
| Abstract: | Experimental results show that Cu atoms can float out or segregate to the NiFe/FeMn interface for Ta/NiFe/Cu/NiFe/FeMn/Ta spin-valve multilayers, which results in a fall of the exchange coupling field (Hex) of NiFe/FeMn in the spin-valve multilayers. However, when a small amount of Bi atoms are deposited between Cu and pinned NiFe layer for the spin-valve multilayers, the Cu atoms' segregation to the NiFe/FeMn interface can be suppressed. At the same time, the Hex of NiFe/FeMn in the spin-valve multilayers with a Bi insetting layer can be effectively increased. |
| Keywords: | interlayer segregation exchange coupling field surface-active atom Bi X-ray photoelectron spectroscopy |
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