This article is cited in 29 papers

REVIEWS OF TOPICAL PROBLEMS

Ultrasonic studies of the critical dynamics of magnetically ordered crystals

I. K. Kamilov^a, Kh. K. Aliev<sup>b

a</sup> Daghestan Institute of Physics after Amirkhanov
^b Daghestan State University, Makhachkala

Abstract: The current state of ultrasonic research of dynamic critical phenomena in magnetically ordered crystals is reviewed. Based on relevant theoretical concepts, the conclusion is drawn that the experimental data on ferro-, ferri-, and antiferromagnetic materials in both the hydrodynamic and critical regions can be described in terms of the dynamic scaling concept and the theory of interacting modes. The influence of a magnetic field on the dynamics of critical fluctuations of magnetization and spin-energy density is discussed.

PACS: 43.35.Cg, 64.60.Ht, 75.50.y

Received: December 31, 1998

DOI: 10.3367/UFNr.0168.199809c.0953

 English version: Physics–Uspekhi, 1998, 41:9, 865–884

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