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Published in: Physics of Metals and Metallography 12/2021

01-12-2021 | ELECTRICAL AND MAGNETIC PROPERTIES

Effect of Diffusion on the Appearance of a Percolation Cluster in Magnets with Direct Exchange

Authors: V. I. Belokon’, O. I. D’yachenko, R. V. Lapenkov

Published in: Physics of Metals and Metallography | Issue 12/2021

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Abstract

The effect produced by the diffusion of interacting ions, which have a magnetic moment and are located at crystal lattice sites, on the process of magnetic ordering is studied within the theory of random fields. In this case, a percolation cluster may appear under the conditions, in which it does not appear in the case of immobile ions. In practice, this means the appearance of local areas with an increased concentration of “ferromagnetic” ions. The dependences of the Curie temperature on the concentration \(T = {{T}_{{\text{C}}}}\left( p \right)\) are also plotted for the number of the closest neighbors \(z = 4\) and \(z = 6\) in the case of “frozen” and mobile ions.

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Metadata
Title
Effect of Diffusion on the Appearance of a Percolation Cluster in Magnets with Direct Exchange
Authors
V. I. Belokon’
O. I. D’yachenko
R. V. Lapenkov
Publication date
01-12-2021
Publisher
Pleiades Publishing
Published in
Physics of Metals and Metallography / Issue 12/2021
Print ISSN: 0031-918X
Electronic ISSN: 1555-6190
DOI
https://doi.org/10.1134/S0031918X21120024