Micromagnetic study of ultrathin magnetic films

Xiao Hu, Yoshiyuki Kawazoe

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

The phenomenon of spin reorientations in ultrathin magnetic films is discussed. A micromagnetic theory is presented which reveals the competition between the in-plane shape anisotropy and the normal surface anisotropy through a finite exchange stiffness. For small surface anisotropy, two continuous transitions in spin orientation are derived as the film thickness is increased: first from the uniform, normal configuration to a nonuniform, canting configuration, and then to the uniform, in-plane configuration. This result is consistent with experimental observations. For large surface anisotropy, it is derived theoretically that only the first spin reorientation occurs and the canting configuration remains stable even at large thickness limit.

Original languageEnglish
Pages (from-to)198-204
Number of pages7
JournalComputational Materials Science
Volume10
Issue number1-4
DOIs
Publication statusPublished - 1998 Feb

Keywords

  • Micromagnetics
  • Normal surface anisotropy
  • Spin-reorientation transition
  • Ultrathin magnetic film

ASJC Scopus subject areas

  • Computer Science(all)
  • Chemistry(all)
  • Materials Science(all)
  • Mechanics of Materials
  • Physics and Astronomy(all)
  • Computational Mathematics

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