Effect of Pt spacers on interface exchange coupling in ferromagnetic/antiferromagnetic bilayers

被引：0
|
作者：
Wang Yi-Jun [1 ]
Liu Yang [1 ]
Yu Guang-Hua [1 ]
机构：
[1] Univ Sci & Technol Beijing, Sch Mat Phys & Chem, Beijing 100083, Peoples R China
来源：
ACTA PHYSICA SINICA | 2012年 / 61卷 / 16期
基金：
中国国家自然科学基金;
关键词：
magnetic multilayer; exchange coupling; Pt spacer; uncompensated spin moment; BIAS; MAGNETORESISTANCE; ANISOTROPY; FILMS; MODEL; SPINS;
D O I：
10.7498/aps.61.167503
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
By inserting a Pt spacer between ferromagnetic (FM)/antiferromagnetic (FeMn) coumpling systems or by doping Pt element in the AFM layer, the depth dependence of Pt spacer and the thickness dependence of Pt doping layer on exchange bias (H-ex) and coercivity (H-c) are investigated. The results indicate that the number of uncompensated spin moments (UCSs) of NiFe/FeMn(d(pt))/Pt/FeMn increases as a result of inserting Pt spacer, which enhances H-ex and H-c of the system. Also, the distribution depth about 1.3 nm of UCS of FeMn in NiFe/FeMn system is inferred. Besides, by doping Pt element in FeMn near the FM/FeMn interlayer, we find that the H-ex of the system is enhanced efficiently, which is caused by the huge increase of the number of UCSs in the system.
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页数：6
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