This article is cited in 2 papers

CONDENSED MATTER

Mechanism of the formation of a soft mode in ferroelastic phase transition

S. V. Goryainov, N. N. Ovsyuk

Institute of Mineralogy and Petrology, Siberian Branch RAS, Novosibirsk

Abstract: It is shown that the softening of the acoustic mode and the ensuing ferroelastic phase transition are due to the linear-quadratic interaction between the symmetric and antisymmetric deformations, which is presently neglected in the literature. An expression is obtained which can be used to predict the phase transition pressure if the initial elastic moduli are known.

PACS: 62.20.Dc, 64.60.-i

Received: 01.03.2001

 English version: Journal of Experimental and Theoretical Physics Letters, 2001, 73:8, 408–410

Bibliographic databases:

•