Macrospin limit and configurational anisotropy in nanoscale Permalloy triangles

Details Macrospin limit and configurational anisotropy in nanoscale Permalloy triangles Macrospin limit and configurational anisotropy in nanoscale Permalloy triangles

2009-11-26

arxiv.org/abs/0911.5121v1

Physics

Condensed Matter

Materials Science

Scientific paper

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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