On the random temperature model for relaxors

The dependence of the Burns temperature on the parameters of the regions of structural heterogeneity was determined and the freezing temperature of a separate polar nanoregion was estimated within the framework of the phenomenological model of random temperature proposed to describe the properties o...

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Bibliographic Details
Published inFerroelectrics Vol. 612; no. 1; pp. 17 - 35
Main Authors Nechaev, V. N., Shuba, A. V., Gotsev, D. V.
Format Journal Article
LanguageEnglish
Published Philadelphia Taylor & Francis 18.08.2023
Taylor & Francis Ltd
Subjects
Burns temperature
Ferroelectric relaxor
Ferroelectricity
Free energy
Freezing
freezing temperature
Heterogeneity
Polar environments
polar nanoregion
Relaxors
Temperature dependence
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Summary:The dependence of the Burns temperature on the parameters of the regions of structural heterogeneity was determined and the freezing temperature of a separate polar nanoregion was estimated within the framework of the phenomenological model of random temperature proposed to describe the properties of ferroelectric relaxors. It is shown that taking into account the temperature dependence of the free energy of the polar region is important for determining the dependence of the relaxation frequency on temperature.
ISSN:0015-0193
1563-5112
DOI:10.1080/00150193.2023.2211302