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A thermodynamic theory of the cubic-orthorhombic phase transition in boracites

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Czechoslovak Journal of Physics B Aims and scope

Abstract

A thermodynamic theory of the cubic-orthorhombic phase transition in boracites is developed. The temperature dependences of dielectric, piezoelectric and elastic constants near the phase transition temperature are derived. Since the parameter of the phase transition is not the polarization, the spontaneous strains and polarization are not related by electromechanical constants. Magnetic properties of boracites are not considered.

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It is a pleasure to acknowledge many helpful discussions with Dr. V. Janovec, as well as with Dr. J. Fousek, J. Petzelt and F. Smutný of the Institute of Physics of the Czechoslovak Academy of Sciences in Prague.

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Dvořák, V. A thermodynamic theory of the cubic-orthorhombic phase transition in boracites. Czech J Phys 21, 1250–1261 (1971). https://doi.org/10.1007/BF01699488

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  • DOI: https://doi.org/10.1007/BF01699488

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