Nucleation of vortex pairs in exchange biased nanoelements | Zendy

A. S. M. Silva | Zendy; Ana L. Dantas | Zendy; G. O. G. Rebouças | Zendy; A. S. Carriço | Zendy

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Nucleation of vortex pairs in exchange biased nanoelements

Author(s) -

A. S. M. Silva,

Ana L. Dantas,

G. O. G. Rebouças,

A. S. Carriço

Publication year - 2011

Publication title -

journal of applied physics

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.699

H-Index - 319

eISSN - 1089-7550

pISSN - 0021-8979

DOI - 10.1063/1.3537924

Subject(s) - permalloy , vortex , condensed matter physics , nucleation , chirality (physics) , micromagnetics , magnetic hysteresis , hysteresis , vorticity , physics , materials science , magnetic field , magnetization , mechanics , quantum mechanics , thermodynamics , symmetry breaking , chiral symmetry breaking , nambu–jona lasinio model

We report a theoretical investigation of interface effects in the magnetic order of interface biased iron and Permalloy™ elliptical nano-elements. Contrary to intuition, there is a partial pinning of the interface layer, favoring double vortex states along the hysteresis loop. Interface biasing affects the relative chirality and the distance of the vortices. Unbiased nanoelements may nucleate vortex pairs with the same chirality separated by an antivortex. For interface biased nanoelements the vortex pair forms with opposite chirality separated by a magnetic domain.

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