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

Yili Xiao; Shaohai Chen; Zongzhi Zhang; Bin Ma; Q. Y. Jin

doi:10.1063/1.4797474

Magnetization reversal in antiferromagnetically coupled [Pt/CoFeB] _N1/Ru/[CoFeB/Pt]_N2 structures with perpendicular anisotropy

Yili Xiao
, Shaohai Chen
, Zongzhi Zhang
, Bin Ma
, Q. Y. Jin

Research output: Contribution to journal › Article › peer-review

12 Scopus citations

Abstract

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/cm². 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 ∼0.4 nm thick magnetic dead layer mostly at the CoFeB/Ru interface.

Original language	English
Article number	17A325
Journal	Journal of Applied Physics
Volume	113
Issue number	17
DOIs	https://doi.org/10.1063/1.4797474
State	Published - 7 May 2013
Externally published	Yes

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

abstract = "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/cm2. 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 ∼0.4 nm thick magnetic dead layer mostly at the CoFeB/Ru interface.",

author = "Yili Xiao and Shaohai Chen and Zongzhi Zhang and Bin Ma and Jin, \{Q. Y.\}",

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TY - JOUR

T1 - Magnetization reversal in antiferromagnetically coupled [Pt/CoFeB] N1/Ru/[CoFeB/Pt]N2 structures with perpendicular anisotropy

AU - Xiao, Yili

AU - Chen, Shaohai

AU - Zhang, Zongzhi

AU - Ma, Bin

AU - Jin, Q. Y.

PY - 2013/5/7

Y1 - 2013/5/7

N2 - 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/cm2. 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 ∼0.4 nm thick magnetic dead layer mostly at the CoFeB/Ru interface.

AB - 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/cm2. 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 ∼0.4 nm thick magnetic dead layer mostly at the CoFeB/Ru interface.

UR - https://www.scopus.com/pages/publications/84877726712

U2 - 10.1063/1.4797474

DO - 10.1063/1.4797474

M3 - 文章

AN - SCOPUS:84877726712

SN - 0021-8979

VL - 113

JO - Journal of Applied Physics

JF - Journal of Applied Physics

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M1 - 17A325

ER -

Magnetization reversal in antiferromagnetically coupled [Pt/CoFeB] _N1/Ru/[CoFeB/Pt]_N2 structures with perpendicular anisotropy

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