Micromagnetic modeling studies on the effects of stress on magnetization reversal and dynamic hysteresis

Ruilong Hu, Ai Kah Soh, Guangping Zheng, Yong Ni

Research output: Journal article publicationJournal articleAcademic researchpeer-review

28 Citations (Scopus)

Abstract

The complex behaviors of magnetic materials subjected to magneto-electro-mechanical coupled fields call for a better understanding of the mechanism of multi-fields coupling. In this paper, micromagnetic modeling is carried out to study the effect of stress on hysteresis loops and dynamic magnetization reversal. The time-dependent Landau-Lifshitz-Gilbert equation which governs the evolution of magnetization is solved using the fast Fourier transform technique in reciprocal space. The simulation results show that the stress changes the distribution of easy directions and, therefore, leads to the change of magnetic properties. Moreover, the positive product of the stress and saturation magnetostriction coefficients increases the coercivity, hence, increases the area enclosed by the hysteresis loop. A stress-induced magnetization reversal is investigated.
Original languageEnglish
Pages (from-to)458-468
Number of pages11
JournalJournal of Magnetism and Magnetic Materials
Volume301
Issue number2
DOIs
Publication statusPublished - 1 Jun 2006
Externally publishedYes

Keywords

  • Coercivity
  • Hysteresis loop
  • Magnetostriction
  • Micromagnetism
  • Scaling

ASJC Scopus subject areas

  • Condensed Matter Physics

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