Macrospin limit and configurational anisotropy in nanoscale permalloy triangles - Archive ouverte HAL
Article Dans Une Revue Journal of Magnetism and Magnetic Materials Année : 2010

Macrospin limit and configurational anisotropy in nanoscale permalloy triangles

Résumé

In Permalloy submicron triangles, configurational anisotropy - a higher-order form of shape anisotropy - yields three equivalent easy axes, imposed by the structures' symmetry order. Supported by micromagnetic simulations, an experimental method was devised to evaluate the nanostructure dimensions for which a Stoner-Wohlfarth type of reversal could be used to describe this particular magnetic anisotropy. In this regime, a straightforward procedure using an in-plane rotating field allowed us to quantify experimentally the six-fold anisotropy fields for triangles of different thicknesses and sizes.
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Dates et versions

hal-00436024 , version 1 (26-11-2009)

Identifiants

Citer

L. Thevenard, H.T. Zeng, D. Petit, R.P. Cowburn. Macrospin limit and configurational anisotropy in nanoscale permalloy triangles. Journal of Magnetism and Magnetic Materials, 2010, 322 (15), pp.2152-2156. ⟨10.1016/j.jmmm.2010.01.048⟩. ⟨hal-00436024⟩
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