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arXiv · 1310.3979

Plasticity-Induced Magnetization in Amorphous Magnetic Solids

H. George E. Hentschel·Itamar Procaccia·Bhaskar Sen Gupta
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Abstract

Amorphous magnetic solids, like metallic glasses, exhibit a novel effect: the growth of magnetic order as a function of mechanical strain under athermal conditions in the presence of a magnetic field. The magnetic moment increases in steps whenever there is a plastic event. Thus plasticity induces the magnetic ordering, acting as the effective noise driving the system towards equilibrium. We present results of atomistic simulations of this effect in a model of a magnetic amorphous solid subjected to pure shear and a magnetic field. To elucidate the dependence on external strain and magnetic field we offer a mean-field theory that provides an adequate qualitative understanding of the observed phenomenon.

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H. George E. Hentschel, Itamar Procaccia, Bhaskar Sen Gupta. 2013-10-15. Plasticity-Induced Magnetization in Amorphous Magnetic Solids. https://doi.org/10.1209/0295-5075%2F105%2F37006

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