Vortex magnetic structure in circularly magnetized microwires as deduced from magneto-optical Kerr measurements

Yurii P. Ivanov; R. P. del Real; O. Chubykalo-Fesenko; M. Vázquez

doi:10.1063/1.4863262

Vortex magnetic structure in circularly magnetized microwires as deduced from magneto-optical Kerr measurements

Yurii P. Ivanov, R. P. del Real, O. Chubykalo-Fesenko, M. Vázquez

Computer, Electrical and Mathematical Sciences and Engineering

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

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Abstract

The magneto-optic Kerr effect has been employed to determine the magnetization process and estimate the domain structure of microwires with circular magnetic anisotropy. The diameter of microwires was 8 μm, and pieces 2 cm long were selected for measurements. The analysis of the local surface longitudinal and transverse hysteresis loops has allowed us to deduce a vortex magnetic structure with axial core and circular external shell. Moreover, a bamboo-like surface domain structure is confirmed with wave length of around 10 to 15 μm and alternating chirality in adjacent circular domains. The width of the domain wall is estimated to be less than 3 μm. Finally, closure domain structures with significant helical magnetization component are observed extending up to around 1000 μm from the end of the microwire.

Original language	English (US)
Pages (from-to)	063909
Journal	Journal of Applied Physics
Volume	115
Issue number	6
DOIs	https://doi.org/10.1063/1.4863262
State	Published - Feb 14 2014

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KAUST Repository Item: Exported on 2020-10-01

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title = "Vortex magnetic structure in circularly magnetized microwires as deduced from magneto-optical Kerr measurements",

abstract = "The magneto-optic Kerr effect has been employed to determine the magnetization process and estimate the domain structure of microwires with circular magnetic anisotropy. The diameter of microwires was 8 μm, and pieces 2 cm long were selected for measurements. The analysis of the local surface longitudinal and transverse hysteresis loops has allowed us to deduce a vortex magnetic structure with axial core and circular external shell. Moreover, a bamboo-like surface domain structure is confirmed with wave length of around 10 to 15 μm and alternating chirality in adjacent circular domains. The width of the domain wall is estimated to be less than 3 μm. Finally, closure domain structures with significant helical magnetization component are observed extending up to around 1000 μm from the end of the microwire.",

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T1 - Vortex magnetic structure in circularly magnetized microwires as deduced from magneto-optical Kerr measurements

AU - Ivanov, Yurii P.

AU - del Real, R. P.

AU - Chubykalo-Fesenko, O.

AU - Vázquez, M.

N1 - KAUST Repository Item: Exported on 2020-10-01

PY - 2014/2/14

Y1 - 2014/2/14

N2 - The magneto-optic Kerr effect has been employed to determine the magnetization process and estimate the domain structure of microwires with circular magnetic anisotropy. The diameter of microwires was 8 μm, and pieces 2 cm long were selected for measurements. The analysis of the local surface longitudinal and transverse hysteresis loops has allowed us to deduce a vortex magnetic structure with axial core and circular external shell. Moreover, a bamboo-like surface domain structure is confirmed with wave length of around 10 to 15 μm and alternating chirality in adjacent circular domains. The width of the domain wall is estimated to be less than 3 μm. Finally, closure domain structures with significant helical magnetization component are observed extending up to around 1000 μm from the end of the microwire.

AB - The magneto-optic Kerr effect has been employed to determine the magnetization process and estimate the domain structure of microwires with circular magnetic anisotropy. The diameter of microwires was 8 μm, and pieces 2 cm long were selected for measurements. The analysis of the local surface longitudinal and transverse hysteresis loops has allowed us to deduce a vortex magnetic structure with axial core and circular external shell. Moreover, a bamboo-like surface domain structure is confirmed with wave length of around 10 to 15 μm and alternating chirality in adjacent circular domains. The width of the domain wall is estimated to be less than 3 μm. Finally, closure domain structures with significant helical magnetization component are observed extending up to around 1000 μm from the end of the microwire.

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DO - 10.1063/1.4863262

M3 - Article

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VL - 115

SP - 063909

JO - Journal of Applied Physics

JF - Journal of Applied Physics

IS - 6

ER -

Vortex magnetic structure in circularly magnetized microwires as deduced from magneto-optical Kerr measurements

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