Magnetism of nanophase composites

D. J. Sellmyer, R. Skomski

Research output: Contribution to journalArticle

9 Scopus citations

Abstract

The magnetic behavior of hard-magnetic nanocomposites such as Pt-Fe thin films and Sm-Co-Cu-Ti cellular magnets is investigated. A quite general free-energy series expansion shows that the temperature dependence of the coercivity of hard-magnetic nanostructures is largely determined by the intrinsic temperature dependence of the micromagnetic parameters. By contrast, thermally activated jumps over micromagnetic energy barriers are small perturbations observed as sweep-rate dependence.

Original languageEnglish (US)
Pages (from-to)531-535
Number of pages5
JournalScripta Materialia
Volume47
Issue number8
DOIs
StatePublished - Oct 2002

Keywords

  • Coercivity
  • Hard magnets
  • Magnetic properties
  • Nanocomposite
  • Nanocrystalline materials

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys

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