Effective anisotropy of thin nanomagnets: Beyond the surface-anisotropy approach

Effective anisotropy of thin nanomagnets: Beyond the surface-anisotropy approach

Jean-Guy Caputo,1,2 Yuri Gaididei,3 Volodymyr P. Kravchuk,4 Franz G. Mertens,5 and Denis D. Sheka4,* 1Laboratoire de Mathématiques, INSA de Rouen, Boîte Postale 8, 76131 Mont-Saint-Aignan Cedex, France 2Laboratoire de Physique Theorique et Modelisation, Université de Cergy-Pontoise and CNRS, Cergy-Pontoise 95011, France 3Institute for Theoretical Physics, 03143 Kiev, Ukraine 4National Taras She...

Surface-induced cubic anisotropy in nanomagnets

– We investigate the effects of surface anisotropy in a spherical magnetic nanoparticle. By computing minor loops, 2D and 3D energyscape, and by investigating the behaviour of the net magnetisation, we show that the behaviour of a many-spin particle is modeled by a macro-spin effective energy containing a uniaxial and cubic anisotropy terms. Introduction. – A magnetic nanoparticle exhibits many...

Magnetic Anisotropy of Molecular Nanomagnets

The Effect of Normal Anisotropy on Thin-Walled Tube Bending

Thin-walled tube bending has common applications in the automobile and aerospace industries. The rotary-draw-bending method is a complex physical process with multi-factor interactive effects and is one of the advanced tube forming processes with high efficiency, high forming precision, low consumption and good flexibility for bending angle changes. However, it may cause a wrinkling phenomenon,...

Breaking the configurational anisotropy in Fe single crystal nanomagnets