6533b833fe1ef96bd129b597
RESEARCH PRODUCT
<title>Correlation effects in the disordered ferroelectrics</title>
Vladimir A. StephanovichM. D. GlinchukE. A. Eliseevsubject
Correlation function (statistical mechanics)DipoleRandom fieldDistribution functionField (physics)Condensed matter physicsChemistryRadiusPolarization (waves)Burns temperaturedescription
ABSTRACT The calculation of the correlation radius distribution function is performed for the cases of undamped and overdamped softmode dispersion laws. Taking into account the correlation radius dependence on the random field and this field distribution function we carried out the theoretical calculation of the correlation radius distribution function dependence ontemperature, damping coefficient and random field distribution function parameters. It was shown that at temperaturehigher than Burns temperature Td the most probable value of the correlation radius is equal to its maximal valueindependently on the system disorder, while in the dipole glass state it is close to the minimal value with broad tail of distribution function existing at broad temperature region.Keywords: correlation radius, relaxor, polarization, susceptibility, distribution function. 1. INTRODUCTION The correlation effects are described quantitatively via the correlation radius. It reflects the strength of polarizationfluctuation and plays an important role in the ferroelectrics physics. The correlation function of these fluctuations is
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2003-08-08 | SPIE Proceedings |