Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/24451
Title: Dynamic hysteresis scaling of first-order phase transition ferroelectrics near the phase transition point in the (η2)3 model
Authors: Yu, H
Wang, Y
Liu, JM
Chan, HLW 
Choy, CL 
Issue Date: 2003
Source: Journal of physics condensed matter, 2003, v. 15, no. 49, p. 8631-8645 How to cite?
Journal: Journal of Physics Condensed Matter 
Abstract: The dynamic hysteresis of the first-order phase transition around the transition point Tc in ferroelectrics is studied by investigating the dynamic response of the Landau-Devonshire (η2)3 model to a time-varying external field of frequency f and amplitude E0. It is revealed that the single-loop hysteresis as obtained above the upper critical point T+ and below the absolute instability point T0 shows dynamic behaviours very different from the double-loop hysteresis obtained between Tc and T+. An extensive calculation reveals a power-law scaling for hysteresis area as a function of E0, while no reliable power-law scaling for the area as a function of f is available in the low-f regime. The scaling for the double-loop hysteresis seems not to fall into the same class as single-loop hysteresis. Furthermore, the power-law exponents, if any, are somewhat temperature-dependent, but this dependence is very weak in the regime of low E0 and high f.
URI: http://hdl.handle.net/10397/24451
ISSN: 0953-8984
DOI: 10.1088/0953-8984/15/49/032
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