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J. Phys. IV France
Volume 07, Number C5, November 1997
IVth European Symposium on Martensitic Transformations
Page(s) C5-53 - C5-58
IVth European Symposium on Martensitic Transformations

J. Phys. IV France 07 (1997) C5-53-C5-58

DOI: 10.1051/jp4:1997508

Competition between Relaxation Kinetics and Heat Transfer in the Dynamics of Phase Transition Fronts

A. Gordon1, S. Dorfman2 and D. Fuks3

1  Department of Mathematics and Physics, Haifa University at Oranim, 36006 Tivon, Israel
2  Department of Physics, Technion - Israel Institute of Technology, 32000 Haifa, Israel
3  Materials Engineering Department, Ben-Gurion University of the Negev, P.O. Box 653, 84105 Beer Sheva, Israel

The velocity of the interphase boundary motion caused by latent heat transfer at ferroelectric phase transitions is calculated. The criterion for separating of two mechanisms for the front motion - the latent heat transfer and the relaxation of the order parameter - is obtained for ferroelectrics. Electric field dynamics of interphase boundaries have been studied. The expression for the front velocity of the threshold field type is derived.

© EDP Sciences 1997