Thermally induced magnetization switching in Gd/Fe multilayers

XU, C., OSTLER, Thomas and CHANTRELL, R. W. (2016). Thermally induced magnetization switching in Gd/Fe multilayers. Physical Review B, 93 (5), 054302.

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Official URL: http://link.aps.org/doi/10.1103/PhysRevB.93.054302
Link to published version:: 10.1103/PhysRevB.93.054302

Abstract

A theoretical model of Gd/Fe multilayers is constructed using the atomistic spin dynamics formalism. By varying the thicknesses and number of layers we have shown that a strong dependence of the energy required for thermally induced magnetization switching (TIMS) is present; with a larger number of interfaces, lower energy is required. The results of the layer resolved dynamics show that the reversal process of the multilayered structures, similar to that of a GdFeCo alloy, is driven by the antiferromagnetic interaction between the transition-metal and rare-earth components. Finally, while the presence of the interface drives the reversal process, we show here that the switching process does not initiate at the surface but from the layers furthest from it, a departure from the alloy behavior which expands the classes of material types exhibiting TIMS.

Item Type: Article
Departments: Arts, Computing, Engineering and Sciences > Engineering and Mathematics
Identification Number: 10.1103/PhysRevB.93.054302
Depositing User: Thomas Ostler
Date Deposited: 31 Mar 2017 08:21
Last Modified: 31 Mar 2017 08:28
URI: http://shura.shu.ac.uk/id/eprint/15292

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