Reversal of exchange bias in nanocrystalline antiferromagnetic-ferromagnetic bilayers

C. Prados, E. Pina, A. Hernando, A. Montone

Research output: Contribution to journalArticle

25 Citations (Scopus)

Abstract

The sign of the exchange bias in field cooled nanocrystalline antiferromagnetic-ferromagnetic bilayers (Co-O and Ni-O/permalloy) is reversed at temperatures approaching the antiferromagnetic (AFM) blocking temperature. A similar phenomenon is observed after magnetic training processes at similar temperatures. These effects can be explained assuming that the boundaries of nanocrystalline grains in AFM layers exhibit lower transition temperatures than grain cores.
Original languageEnglish
Pages (from-to)10063 - 10074
Number of pages12
JournalJournal of Physics Condensed Matter
Volume14
Issue number43
DOIs
Publication statusPublished - 4 Nov 2002
Externally publishedYes

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All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics

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