Open AccessBreaking the configurational anisotropy in Fe single crystal nanomagnets
Author(s) -
A. Gómez,
F. Cebollada,
F. J. Palomares,
Nadiezhda Sánchez,
E. M. González,
J. M. González,
J. L. Vicent
Publication year - 2014
Publication title -
applied physics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.182
H-Index - 442
eISSN - 1077-3118
pISSN - 0003-6951
DOI - 10.1063/1.4868401
Subject(s) - nanomagnet , anisotropy , magnetocrystalline anisotropy , condensed matter physics , vortex , nucleation , materials science , field (mathematics) , single crystal , symmetry (geometry) , magnetic anisotropy , physics , magnetic field , nuclear magnetic resonance , magnetization , geometry , optics , mechanics , mathematics , quantum mechanics , pure mathematics , thermodynamics
In this work, we improve the ability to tailor the switching mechanism in nanomagnets by introducing an additional, highly controlled source of anisotropy: magnetocrystalline anisotropy. We analyze the vortex dynamics in single crystal Fe nanotriangles with different orientations of the crystalline axes. By experimental studies and simulation, we show that the angular dependence of the vortex annihilation field springs from the convolution of the crystalline and configurational anisotropies. In contrast, the remanence and the nucleation field present a much simpler behavior controlled by the existence of a single symmetry axis when shape and crystalline orientation are taken into account. © 2014 AIP Publishing LLC.We thank the financial support by Spanish MINECO, Grant Nos. MAT2010-18432, MAT2010-21088-C03-03, FIS2008-06249 (Grupo consolidado), CONSOLIDER CSD2007-00010, FUNCOAT CSD-2008-0023, and CAM Grant No. S2009/MAT1726.Peer Reviewe
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