Magnetic coupling in Fe60Sm40-Fe95Ta5N multilayers

A. Butera, J. L. Weston, J. A. Barnard

Research output: Contribution to journalConference articlepeer-review

Abstract

Three sets of exchange spring magnetic films and multilayers with different characteristics and well-defined uniaxial anisotropy have been studied by magnetization and ferromagnetic resonance (FMR) techniques. It was found that the exchange spring behavior is strongly influenced by the thickness of the individual layers. In FMR measurements, two or more modes can be observed. These modes are related only to the soft phase and the different resonance fields arise from the different anisotropy of the soft layers. It was also observed that the effective demagnetization field is larger in multilayers than in single films, suggesting the presence of an additional easy plane anisotropy.

Original languageEnglish (US)
Pages (from-to)2682-2684
Number of pages3
JournalIEEE Transactions on Magnetics
Volume38
Issue number5 I
DOIs
StatePublished - Sep 1 2002
Event2002 International Magnetics Conference (Intermag 2002) - Amsterdam, Netherlands
Duration: Apr 28 2002May 2 2002

Keywords

  • Exchange spring magnet
  • Ferromagnetic resonance
  • Magnetic thin films
  • Materials for microactuators

ASJC Scopus subject areas

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

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