Abstract
A model of simultaneous magnetic and structural first-order transitions in crystals with strong cubic magnetic anisotropy has been constructed on the basis of a combination of the magnetic modified 8-state Potts model [1] and theoretical models of structural phase transitions in cubic crystals [2]. The magnetic heat capacity and specific volume, as well as the temperature dependence of the rhombohedron angle, have been calculated in a wide temperature range. The calculation of the temperature evolution of high-temperature diffuse magnetic neutron scattering has been performed to show that upon the passage through the Curie point it is converted into magnetic Bragg peaks.
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Original Russian Text © F.A. Kassan-Ogly, B.N. Filippov, 2008, published in Fizika Metallov i Metallovedenie, 2008, Vol. 105, No. 3, pp. 227–234.
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Kassan-Ogly, F.A., Filippov, B.N. Magnetic and structural phase transitions in the monochalcogenides of uranium. Phys. Metals Metallogr. 105, 211–218 (2008). https://doi.org/10.1007/s11508-008-3001-5
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DOI: https://doi.org/10.1007/s11508-008-3001-5