The origin of athermal training in polycrystalline metallic exchange bias thin films
Kaeswurm B, O'Grady K (2011)
Publication Status: Published
Publication Type: Journal article
Publication year: 2011
Journal
Publisher: American Institute of Physics (AIP)
Book Volume: 99
DOI: 10.1063/1.3661172
Abstract
The phenomenon of training in exchange bias systems has no clear and unambiguous explanation. It is known that the training effect consists of an athermal and a thermal component where the latter derives from the well understood thermal instability in the bulk of the antiferromagnetic (AF) grains. In this work, we report on a study of the magnetic properties of a tri-layer system consisting of F/AF/F where reversal of the individual ferromagnetic (F) layers shows that the athermal training effect derives solely from the interface spin configuration and not from the bulk of the AF grains. We propose a model whereby the origin of the training derives from the degree of order in interfacial spin clusters which lie in a thermo-remanent state after the AF is set and whose order is disrupted by the application of a reverse field resulting in a reduced coercivity and the characteristic change in the loop shape. (C) 2011 American Institute of Physics. [doi:10.1063/1.3661172]
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APA:
Kaeswurm, B., & O'Grady, K. (2011). The origin of athermal training in polycrystalline metallic exchange bias thin films. Applied Physics Letters, 99. https://dx.doi.org/10.1063/1.3661172
MLA:
Kaeswurm, Barbara, and K. O'Grady. "The origin of athermal training in polycrystalline metallic exchange bias thin films." Applied Physics Letters 99 (2011).
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