Magnetic viscosity measurements reveal reversal asymmetry in exchange-biased bilayers

C. Leighton, Ivan K. Schuller

Research output: Contribution to journalArticle

34 Scopus citations

Abstract

We have used time-dependent magnetization measurements to probe the asymmetry in the magnetization-reversal mechanisms in exchange-biased MnF2/Fe bilayers. Analysis of the magnetic viscosity on the magnetizing and demagnetizing sides of the exchange-shifted hysteresis loops reveals a striking asymmetry. This is due to different mechanisms for reversal on the two sides of the loop as elucidated previously by polarized-neutron reflectometry and anisotropic-magnetoresistance measurements. The viscosity data reveal asymmetric features that are intrinsically related to the nature of the exchange anisotropy.

Original languageEnglish (US)
Article number174419
Pages (from-to)1744191-1744195
Number of pages5
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume63
Issue number17
StatePublished - Jan 1 2001

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