Spin-phonon interactions in heterophase ferromagnets

V.I. Yukalov

Physica A: Statistical Mechanics and its Applications, 1989, vol. 155, issue 3, 519-544

Abstract: The combined influence of heterophase fluctuations and phonon excitations on lattice and magnetic properties of ferromagnets is investigated. A new procedure for introducing phonon variables preserving the translational symmetry is developed. Spin variables are treated in the ter Haar approximation and in the mean-field approximation. The renormalization of the sound velocity due to both spin-phonon coupling and heterophase fluctuations is obtained; the latter are found by numerical estimates to be more important near the critical point than the former. The Mössbauer-effect probability is calculated and its anomalous sagging near transition points is explained.

Date: 1989
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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:155:y:1989:i:3:p:519-544

DOI: 10.1016/0378-4371(89)90004-6

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