Breaking the configurational anisotropy in Fe single crystal nanomagnets



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Gómez Nicola, Ángel and Cebollada, F. and Palomares, F. J. and Sánchez, N. and González Herrera, Elvira María and Gonzalez, J. M. and Vicent López, José Luis (2014) Breaking the configurational anisotropy in Fe single crystal nanomagnets. Applied physics letters, 104 (10). ISSN 0003-6951

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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.

Item Type:Article
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©2014 AIP Publishing.
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.

Uncontrolled Keywords:Vortex core; Dots; Nanostructures; Permalloy
Subjects:Sciences > Physics > Physics-Mathematical models
Sciences > Physics > Materials
Sciences > Physics > Solid state physics
Sciences > Physics > Mathematical physics
ID Code:43092
Deposited On:13 Jun 2017 16:17
Last Modified:10 Dec 2018 15:09

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