Interphase Dynamics at Ferroelectric Phase Transition in Perovskite Solid Solutions
Department of Physics, Technion - Israel Institute of Technology, 32000 Haifa, Israel
2 Department of Mathematics and Physics, Haifa University at Oranim, 36006 Tivon, Israel
3 Materials Engineering Department, Ben-Gurion University of the Negev, P.O. Box 653, 84105 Beer Sheva, Israel
The study of the kinetics of first-order phase transitions in ferroelectric solid solutions is performed in the framework of the timedependent Ginzburg-Landau theory. The analytical solution of the equation of motion describing the dynamics of the interphase boundaries is applied to the calculations of width and velocity at different overheating and overcooling temperature values. The experimental data for Pb(Zr,Ti)O3 (PZT) are employed in our calculations. It is shown that the velocity strongly depends on concentration in the vicinity of the phase transition.
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