Fluctuations and Landau-Devonshire expansion for barium titanate
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چکیده
منابع مشابه
Fluctuations and Landau-Devonshire expansion for Barium Titanate
The experimentally observed temperature dependence of the quartic coefficients in the Landau-Devonshire expansion for BaTiO3 is naturally accounted for within a proper fluctuation model. It is explained, in particular, why one of the quartic coefficients varies with temperature above Tc while the second is constant. The tetragonal phase in BaTiO3 is argued to exist essentially due to the therma...
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ژورنال
عنوان ژورنال: Journal of Experimental and Theoretical Physics Letters
سال: 2002
ISSN: 0021-3640,1090-6487
DOI: 10.1134/1.1490011