Please use this identifier to cite or link to this item: http://localhost:8080/xmlui/handle/123456789/1594
Title: Temperature dependent magnetization reversal of exchange biased magnetic vortices in IrMn/Fe microcaps
Authors: Senoy Thomas
Nissen, D
Albrecht, M
Keywords: Magnetization reversal
Magnetic vortex
IrMn/Fe microcaps
Nucleation
Annihilation
Issue Date: 2014
Publisher: American Institute of Physics
Citation: Applied Physics Letters 105(2):Art. No.022405;14 Jul 2014
Abstract: The authors investigated the magnetization reversal of vortex structures in Fe as well as in IrMn/Fe magnetic caps at elevated temperatures up to 450 K. The caps were formed by film deposition onto dense arrays of self-assembled silica particles of 900 nm diameter. In the investigated temperature range, the magnetization reversal in Fe caps evolves via nucleation and annihilation of magnetic vortices. However, in exchange coupled IrMn/Fe caps, the magnetic vortex at zero magnetic field vanishes as the temperature approaches the blocking temperature of IrMn accompanied by an increase in coercivity. Further increase in temperature, approaching the N eel temperature of IrMn, results in a reduction of coercivity as well as remanence indicating the restabilization of a vortex state.
URI: http://ir.niist.res.in:8080/jspui/handle/123456789/1594
ISSN: 0003-6951
Appears in Collections:2014

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