Magnetization reversal in cubic nanoparticles with uniaxial surface anisotropy

Ralph Skomski, Xiao Hui Wei, D. J. Sellmyer

Research output: Contribution to journalArticle

7 Scopus citations

Abstract

The effect of surface anisotropy on the magnetization reversal in small magnetic particles is investigated. The model considers particles of cubic shape cut from a tetragonal crystal with cube faces in the (001) and equivalent planes. In particles having diameters of less than about 10 nm, the coercivity approaches the Stoner-Wohlfarth limit, but the anisotropy field differs from that of the bulk of the particles. With increasing particle size, the nucleation modes acquire the character of magnetic surface or bulk modes that reduce the coercivity.

Original languageEnglish (US)
Pages (from-to)2890-2892
Number of pages3
JournalIEEE Transactions on Magnetics
Volume43
Issue number6
DOIs
Publication statusPublished - Jun 1 2007

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Keywords

  • Coercivity
  • Magnetic particles
  • Nucleation
  • Surface anisotropy

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering

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