Depinning of vortex domain walls from an asymmetric notch in a permalloy nanowire

Weiwei Zhu; Jialin Liao; Zongzhi Zhang; B. Ma; Q. Y. Jin; Yaowen Liu; Zhaocong Huang; Xuefeng Hu; An Ding; Jing Wu; Yongbing Xu

doi:10.1063/1.4745788

Depinning of vortex domain walls from an asymmetric notch in a permalloy nanowire

Weiwei Zhu^*
, Jialin Liao
, Zongzhi Zhang
, B. Ma
, Q. Y. Jin
, Yaowen Liu
, Zhaocong Huang
, Xuefeng Hu
, An Ding
, Jing Wu
, Yongbing Xu

^*Corresponding author for this work

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

20 Scopus citations

Abstract

The mechanism of depinning process of vortex domain wall (DW) in a planar magnetic nanowire with an asymmetric notch is investigated by using focused magneto-optical Kerr effect (MOKE) magnetometer and micromagnetic modeling. Two distinct depinning fields are directly observed by the single-shot MOKE measurements. Micromagnetic modeling provides physical insight into the details of how the depinning process develops at the asymmetric notch and reveals that the different depinning fields originate from the different chiralities of the vortex DWs.

Original language	English
Article number	082402
Journal	Applied Physics Letters
Volume	101
Issue number	8
DOIs	https://doi.org/10.1063/1.4745788
State	Published - 20 Aug 2012
Externally published	Yes

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10.1063/1.4745788

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title = "Depinning of vortex domain walls from an asymmetric notch in a permalloy nanowire",

abstract = "The mechanism of depinning process of vortex domain wall (DW) in a planar magnetic nanowire with an asymmetric notch is investigated by using focused magneto-optical Kerr effect (MOKE) magnetometer and micromagnetic modeling. Two distinct depinning fields are directly observed by the single-shot MOKE measurements. Micromagnetic modeling provides physical insight into the details of how the depinning process develops at the asymmetric notch and reveals that the different depinning fields originate from the different chiralities of the vortex DWs.",

author = "Weiwei Zhu and Jialin Liao and Zongzhi Zhang and B. Ma and Jin, \{Q. Y.\} and Yaowen Liu and Zhaocong Huang and Xuefeng Hu and An Ding and Jing Wu and Yongbing Xu",

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doi = "10.1063/1.4745788",

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T1 - Depinning of vortex domain walls from an asymmetric notch in a permalloy nanowire

AU - Zhu, Weiwei

AU - Liao, Jialin

AU - Zhang, Zongzhi

AU - Ma, B.

AU - Jin, Q. Y.

AU - Liu, Yaowen

AU - Huang, Zhaocong

AU - Hu, Xuefeng

AU - Ding, An

AU - Wu, Jing

AU - Xu, Yongbing

PY - 2012/8/20

Y1 - 2012/8/20

N2 - The mechanism of depinning process of vortex domain wall (DW) in a planar magnetic nanowire with an asymmetric notch is investigated by using focused magneto-optical Kerr effect (MOKE) magnetometer and micromagnetic modeling. Two distinct depinning fields are directly observed by the single-shot MOKE measurements. Micromagnetic modeling provides physical insight into the details of how the depinning process develops at the asymmetric notch and reveals that the different depinning fields originate from the different chiralities of the vortex DWs.

AB - The mechanism of depinning process of vortex domain wall (DW) in a planar magnetic nanowire with an asymmetric notch is investigated by using focused magneto-optical Kerr effect (MOKE) magnetometer and micromagnetic modeling. Two distinct depinning fields are directly observed by the single-shot MOKE measurements. Micromagnetic modeling provides physical insight into the details of how the depinning process develops at the asymmetric notch and reveals that the different depinning fields originate from the different chiralities of the vortex DWs.

UR - https://www.scopus.com/pages/publications/84865467722

U2 - 10.1063/1.4745788

DO - 10.1063/1.4745788

M3 - 文章

AN - SCOPUS:84865467722

SN - 0003-6951

VL - 101

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 8

M1 - 082402

ER -

Depinning of vortex domain walls from an asymmetric notch in a permalloy nanowire

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