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Critical behavior of the spontaneous polarization and the dielectric susceptibility close to the cubic-tetragonal transition in BaTiO3
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Date
2015-09-01
Author
Yurtseven, Hasan Hamit
Oguz, F.
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Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License
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Using Landau mean field model, the spontaneous polarization and the dielectric susceptibility are analyzed as functions of temperature and pressure close to the cubic-tetragonal (ferroelectric-paraelectric) transition in BaTiO3. From the analysis of the dielectric susceptibility and the spontaneous polarization, the critical exponents are deduced in the classical and quantum limits for BaTiO3. From the critical behavior of the dielectric susceptibility, the spontaneous polarization can be described for the ferroelectric-paraelectric (cubic to tetragonal) transition between 4 and 8 GPa at constant temperatures of 0 to 200K in BaTiO3 within the Landau mean field model given here.
Subject Keywords
Dielectric susceptibility
,
Spontaneous polarization
,
Ferroelectric–paraelectric transition
,
Landau mean field model
,
BaTiO3
URI
https://hdl.handle.net/11511/33050
Journal
JOURNAL OF ADVANCED DIELECTRICS
DOI
https://doi.org/10.1142/s2010135x15500241
Collections
Department of Physics, Article