This article is cited in 6 papers

CONDENSED MATTER

Ginzburg – Landau-type theory of antiphase boundaries in polytwinned structures

V. G. Vaks

Russian Research Centre "Kurchatov Institute", Moscow

Abstract: The conventional Landau – Ginzburg theory of interphase boundaries is generalized to the case of not small values of order parameters, with application to polytwinned structures characteristic of cubic-tetragonal-type phase transitions. Explicit expressions for the structure and energy of antiphase boundaries via the functions entering the free energy functional are given. A peculiar dependence of equilibrium orientations of antiphase boundaries on the interaction type is predicted, and it qualitatively agrees with available experimental data.

PACS: 05.70.Fh, 61.50.Ks

Received: 24.01.2001

Language: English

 English version: Journal of Experimental and Theoretical Physics Letters, 2001, 73:5, 237–241

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