Nonequilibrium behavior near a first-order phase transition: Effects due to coupled degrees of freedom

D. L. Abernathy; G. Aeppli; P. B. Littlewood

doi:10.1209/0295-5075/7/1/015

Nonequilibrium behavior near a first-order phase transition: Effects due to coupled degrees of freedom

D. L. Abernathy, G. Aeppli, P. B. Littlewood

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Abstract

We study the time-dependent polarization P(t) after abrupt changes in the electrical field applied to the ferroelectric KH₂PO₄ (KDP) at temperatures close to, but above its Curie point. The form of P(t) depends strongly on whether the ferroelectric regime is entered from the paraelectric state or vice versa. A simple dynamical mean-field theory, which takes account of coupled polarization and strain fields, provides an excellent description of the experiments.

Original language	English
Pages (from-to)	87-92
Number of pages	6
Journal	EPL
Volume	7
Issue number	1
DOIs	https://doi.org/10.1209/0295-5075/7/1/015
State	Published - Sep 1 1988
Externally published	Yes

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abstract = "We study the time-dependent polarization P(t) after abrupt changes in the electrical field applied to the ferroelectric KH2PO4 (KDP) at temperatures close to, but above its Curie point. The form of P(t) depends strongly on whether the ferroelectric regime is entered from the paraelectric state or vice versa. A simple dynamical mean-field theory, which takes account of coupled polarization and strain fields, provides an excellent description of the experiments.",

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AU - Abernathy, D. L.

AU - Aeppli, G.

AU - Littlewood, P. B.

PY - 1988/9/1

Y1 - 1988/9/1

N2 - We study the time-dependent polarization P(t) after abrupt changes in the electrical field applied to the ferroelectric KH2PO4 (KDP) at temperatures close to, but above its Curie point. The form of P(t) depends strongly on whether the ferroelectric regime is entered from the paraelectric state or vice versa. A simple dynamical mean-field theory, which takes account of coupled polarization and strain fields, provides an excellent description of the experiments.

AB - We study the time-dependent polarization P(t) after abrupt changes in the electrical field applied to the ferroelectric KH2PO4 (KDP) at temperatures close to, but above its Curie point. The form of P(t) depends strongly on whether the ferroelectric regime is entered from the paraelectric state or vice versa. A simple dynamical mean-field theory, which takes account of coupled polarization and strain fields, provides an excellent description of the experiments.

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Nonequilibrium behavior near a first-order phase transition: Effects due to coupled degrees of freedom

Abstract

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