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Common Reversal Mechanisms and Correlation Between Transient Domain States and Field Sweep Rate in Patterned Permalloy Structures

Published

Author(s)

June W. Lau, M Beleggia, Y Zhu

Abstract

Complicated domain configurations generated during the magnetization reversal of Permalloy elements patterned in various shapes are the results of a surprisingly few switching mechanisms. By comparing the results from micromagnetic simulations with the experimentally observed switching events using Lorentz microscopy, we found that nucleation and annihilation of vortices and vortex/anti-vortex pairs, and the propagation of Neel and cross-tie walls are the principle mechanisms for magnetization reversal in Permalloy elements with dimensions favorable to domain formation.
Citation
Journal of Applied Physics

Keywords

Lorentz microscopy, magnetization, Permalloy films, transient domain configurations

Citation

Lau, J. , Beleggia, M. and Zhu, Y. (2007), Common Reversal Mechanisms and Correlation Between Transient Domain States and Field Sweep Rate in Patterned Permalloy Structures, Journal of Applied Physics (Accessed May 23, 2024)

Issues

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Created August 20, 2007, Updated February 17, 2017