Influence of interface roughness, film texture, and magnetic anisotropy on exchange bias in [Pt/Co]3/IrMn and IrMn/[Co/Pt]3 multilayers

Jaroslaw Kanak, Tomasz Stobiecki, Sebastiaan van Dijken

Research output: Contribution to journalArticleScientificpeer-review

19 Citations (Scopus)

Abstract

Co/Pt multilayers can exhibit considerable exchange bias along the film normal when grown onto or covered by an antiferromagnetic IrMn layer. The magnitude of the bias effect depends strongly on the selection of the buffer layers and is largest for Co/Pt multilayers with small perpendicular anisotropy. This counterintuitive result is explained by opposite dependencies of exchange bias and magnetic anisotropy on the degree of film texture and grain size. Interface roughness also influences the perpendicular exchange bias field. The largest biases are measured on smooth films. Interlayer mixing during post-deposition annealing procedures decreases the exchange bias field of IrMn-capped Co/Pt multilayers.
Original languageEnglish
Pages (from-to)238-245
JournalIEEE Transactions on Magnetics
Volume44
Issue number2
DOIs
Publication statusPublished - 2008
MoE publication typeA1 Journal article-refereed

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