Static and dynamic magnetic properties in exchange-biased NiFe/FeMn multilayers

被引：11
|
作者：
Wang, Yubo [1 ]
Dai, Bo [1 ]
Huang, Bao [2 ]
Ren, Yong [1 ]
Xu, Jing [1 ]
Wang, Zhen [1 ]
Tan, Shijie [2 ]
Ni, Jing [2 ]
机构：
[1] Southwest Univ Sci & Technol, State Key Lab Cultivat Base Nonmetal Composites &, Mianyang 621010, Peoples R China
[2] 9th Inst China Elect Technol Grp Corp, Mianyang 621010, Peoples R China
来源：
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS | 2016年 / 27卷 / 04期
关键词：
THIN-FILMS; ANISOTROPY; FREQUENCY; THICKNESS; BILAYERS;
D O I：
10.1007/s10854-015-4222-6
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
In this work, NiFe(15 nm)/FeMn(t (AF) ) exchange-biased multilayers are fabricated by magnetron sputtering. The static magnetic properties are characterized using a vibrating sample magnetometer, while the dynamic properties are measured by a vector network analyzer in the frequency range of 0.2-5 GHz. The discrepancy between static and dynamic magnetic anisotropies, especially in the case of thin FeMn layers, for example t (AF) = 3 nm, can be explained by the rotational anisotropy (H (rot) ). Compared with the exchange-biased bilayers, the [NiFe(15 nm)/FeMn(t (AF) )](2) multilayers show a larger resonance frequency (f (FMR)) and effective damping coefficient (alpha (eff) ). Through analysis of the static and dynamic anisotropy fields in each NiFe layer, we find that H (rot) in the up NiFe layer is much larger than that in the down one.
引用
收藏
页码：3778 / 3784
页数：7
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