Controllable chirality switching of a moving domain wall by oblique magnetic field

Soo Man Seo; Kyoung Jin Lee; Soon Wook Jung; Hyun Woo Lee

doi:10.1063/1.3467456

Controllable chirality switching of a moving domain wall by oblique magnetic field

Soo Man Seo, Kyoung Jin Lee, Soon Wook Jung, Hyun Woo Lee

Department of Materials Science and Engineering

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

11 Citations (Scopus)

Abstract

A full micromagnetic model and a simplified one-dimensional analytical model are used to investigate the domain wall dynamics driven by an oblique magnetic field. Both models show that the Walker breakdown [N. L. Schryer and L. R. Walker, J. Appl. Phys. 45, 5406 (1974)] can occur at two distinct field strengths. However, the two models exhibit an important discrepancy due to the antivortex injection at the Walker field, which is not taken into account in the analytical model. The chirality of the domain wall is switched controllably when the field strength is in the range between the two Walker fields. The field window for controllable switching becomes broader with increasing oblique field angle or damping constant.

Original language	English
Article number	032507
Journal	Applied Physics Letters
Volume	97
Issue number	3
DOIs	https://doi.org/10.1063/1.3467456
Publication status	Published - 2010 Jul 19

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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abstract = "A full micromagnetic model and a simplified one-dimensional analytical model are used to investigate the domain wall dynamics driven by an oblique magnetic field. Both models show that the Walker breakdown [N. L. Schryer and L. R. Walker, J. Appl. Phys. 45, 5406 (1974)] can occur at two distinct field strengths. However, the two models exhibit an important discrepancy due to the antivortex injection at the Walker field, which is not taken into account in the analytical model. The chirality of the domain wall is switched controllably when the field strength is in the range between the two Walker fields. The field window for controllable switching becomes broader with increasing oblique field angle or damping constant.",

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N2 - A full micromagnetic model and a simplified one-dimensional analytical model are used to investigate the domain wall dynamics driven by an oblique magnetic field. Both models show that the Walker breakdown [N. L. Schryer and L. R. Walker, J. Appl. Phys. 45, 5406 (1974)] can occur at two distinct field strengths. However, the two models exhibit an important discrepancy due to the antivortex injection at the Walker field, which is not taken into account in the analytical model. The chirality of the domain wall is switched controllably when the field strength is in the range between the two Walker fields. The field window for controllable switching becomes broader with increasing oblique field angle or damping constant.

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Controllable chirality switching of a moving domain wall by oblique magnetic field

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