Size dependence of exchange bias in ferromagnetic/antiferromagnetic bilayers

S. Zhang, Z. Li

Research output: Contribution to journalArticle

32 Scopus citations

Abstract

When the lateral size of exchange-coupled ferromagnetic-antiferromagnetic bilayers is reduced to a deep submicron size (below 0.2 μm), both the exchange bias and the coercive field increase compared to those of macroscopic samples. We attribute this size dependence to the increasing importance of the magnetostatic interaction. By using the Landau-Lifshitz-Gilbert equation, the size dependence of the hysteresis loops of polycrystalline films is calculated and quantitative pictures are established to describe the crossover from small to large samples.

Original languageEnglish (US)
Article number054406
Pages (from-to)544061-544064
Number of pages4
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume65
Issue number5
StatePublished - Feb 1 2002
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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