Sequence, symmetry, and magnetic fluctuations of the magnetization reversal in exchange-biased multilayers

A. Paul*, E. Kentzinger, U. Rücker, D. E. Bürgler, P. Grünberg

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

26 Scopus citations

Abstract

The magnetization reversal in [Ir20Mn80/Co 80Fe20]10 exchange-biased multilayers is studied by specular reflection and off-specular scattering of polarized neutrons. The reversal proceeds sequentially starting with the bottom (top) CoFe layer for decreasing (increasing) field due to the evolution of the grain size along the stack. Each CoFe layer remagnetizes symmetrically for both field branches in a nonuniform mode. Concomitant in-plane magnetization fluctuations revealed by off-specular spin-flip scattering indicate a more complex reversal mechanism than hitherto considered.

Original languageEnglish
Article number224410
Pages (from-to)224410-1-224410-5
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume70
Issue number22
DOIs
StatePublished - Dec 2004
Externally publishedYes

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