Magnetization reversal in antiferromagnetically coupled [Pt/CoFeB]N1/Ru/[CoFeB/Pt]N2 structures with perpendicular anisotropy

被引：11

作者：

Xiao, Yili ^{[1
]}

Chen, Shaohai ^{[1
]}

Zhang, Zongzhi ^{[1
]}

Ma, Bin ^{[1
]}

Jin, Q. Y. ^{[1
,2
,3
]}

机构：

[1] Fudan Univ, Dept Opt Sci & Engn, Minist Educ, Key Lab Micro & Nano Photon Struct, Shanghai 200433, Peoples R China

[2] E China Normal Univ, State Key Lab Precis Spect, Shanghai 200062, Peoples R China

[3] E China Normal Univ, Dept Phys, Shanghai 200062, Peoples R China

来源：

JOURNAL OF APPLIED PHYSICS | 2013年 / 113卷 / 17期

关键词：

COFEB/RU/COFEB;

D O I：

10.1063/1.4797474

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Magnetic interlayer coupling and magnetization switching characteristics have been investigated in synthetic antiferromagnetically coupled [Pt/CoFeB](N1)/Ru/[CoFeB/Pt](N2) structures with perpendicular anisotropy. We observe an oscillatory behavior of the antiferromagnetic coupling with a period of 0.7 nm and a maximum coupling strength of 0.09 erg/cm(2). The coupling field is shown to decrease rapidly with the increase of repetition number and measurement temperature. Depending on the repetition numbers of the two multilayers, magnetic hysteresis loops may or may not display a reversal feature of the net magnetic moment. Samples with large N have a bow-tie loop shape due to the formation of multi-domains. The analysis of magnetic moments and exchange coupling fields show that there exists a similar to 0.4 nm thick magnetic dead layer mostly at the CoFeB/Ru interface. (C) 2013 American Institute of Physics.

引用

页数：3

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