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arXiv · 0910.1040

Effect of dipolar interactions for domain wall dynamics in magnetic thin films

Adil Mughal·Lasse Laurson·Gianfranco Durin·Stefano Zapperi
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Abstract

We study the effect of long range dipolar forces on the dynamics and morphology of domain walls in magnetic thin films by numerical simulations of the spin-1 random field Ising model. By studying the size distribution of avalanches of domain wall motion arising as a response to quasistatic external driving, we observe a cross-over from the case dominated by short range interactions to another universality class where the long range dipolar forces become important. This crossover is accompanied with a change of the domain wall morphology from a rough wall to walls with zigzag structure.

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Adil Mughal, Lasse Laurson, Gianfranco Durin, Stefano Zapperi. 2009-10-06. Effect of dipolar interactions for domain wall dynamics in magnetic thin films. https://doi.org/10.1109/tmag.2009.2033552

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