Magnetization reversal in submicron disks: Exchange biased vortices

J. Sort; A. Hoffmann; S. H. Chung; K. S. Buchanan; M. Grimsditch; M. D. Baró; B. Dieny; J. Nogués

doi:10.1103/PhysRevLett.95.067201

Magnetization reversal in submicron disks: Exchange biased vortices

J. Sort, A. Hoffmann, S. H. Chung, K. S. Buchanan, M. Grimsditch, M. D. Baró, B. Dieny, J. Nogués

Research output: Contribution to journal › Article › peer-review

Abstract

Submicron, circular, ferromagnetic-antiferromagnetic dots exhibit different magnetization reversal mechanisms depending on the direction of the magnetic applied field. Shifted, constricted hysteresis loops, typical for vortex formation, are observed for fields along the exchange bias direction. However, for fields applied close to perpendicular to the exchange bias direction, magnetization reversal occurs via coherent rotation. Magnetic force microscopy imaging together with micromagnetic simulations are used to further clarify the different magnetic switching behaviors.

Original language	English (US)
Article number	067201
Journal	Physical review letters
Volume	95
Issue number	6
DOIs	https://doi.org/10.1103/PhysRevLett.95.067201
State	Published - Aug 5 2005

ASJC Scopus subject areas

Physics and Astronomy(all)

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10.1103/PhysRevLett.95.067201

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abstract = "Submicron, circular, ferromagnetic-antiferromagnetic dots exhibit different magnetization reversal mechanisms depending on the direction of the magnetic applied field. Shifted, constricted hysteresis loops, typical for vortex formation, are observed for fields along the exchange bias direction. However, for fields applied close to perpendicular to the exchange bias direction, magnetization reversal occurs via coherent rotation. Magnetic force microscopy imaging together with micromagnetic simulations are used to further clarify the different magnetic switching behaviors.",

author = "J. Sort and A. Hoffmann and Chung, {S. H.} and Buchanan, {K. S.} and M. Grimsditch and Bar{\'o}, {M. D.} and B. Dieny and J. Nogu{\'e}s",

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AU - Grimsditch, M.

AU - Baró, M. D.

AU - Dieny, B.

AU - Nogués, J.

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