Origin of training effect of exchange bias in Co/CoO due to irreversible thermoremanent magnetization of the magnetically diluted antiferromagnet

Abstract

The irreversible thermoremanent magnetization of a sole, magnetically diluted epitaxial antiferromagnetic Co${}_{1-y}$O(100) layer is determined by the mean of its thermoremanent magnetizations at positive and negative remanence. During hysteresis-loop field cycling, thermoremanent magnetization exhibits successive reductions, consistent with the training effect (TE) of the exchange bias measured for the corresponding Co${}_{1-y}$O(100)/Co bilayer. The TE of exchange bias is shown to have its microscopic origin in the TE of the irreversible thermoremanent magnetization of the magnetically diluted AFM.

References in corpus (4)

• Positive and Perpendicular Exchange Bias CoO/Co Bilayers
• Origin of asymmetric reversal modes in ferromagnetic/antiferromagnetic multilayers
• Probing the interface magnetism in the FeMn/NiFe exchange bias system using magnetic second harmonic generation
• Role of structural defects on exchange bias in the epitaxial CoO/Co system

Cited by in corpus (1)

• The influence of superparamagnetism on exchange anisotropy at CoO/[Co/Pd] interfaces