Dielectric relaxation in the PbFe1/2Nb1/2O3 ceramics

The temperature-frequency dependences of the real and imaginary parts of the complex permittivity ɛ* of the PbFe 1/2 Nb 1/2 O 3 ceramics have been studied. It has been shown that, in the paraelectric phase, the relaxation extrema are formed in the dependences. An adequate description of the experime...

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Bibliographic Details
Published in:Physics of the solid state 2011-09, Vol.53 (9), p.1872-1875
Main Authors: Pavlenko, A. V., Turik, A. V., Reznichenko, L. A., Shilkina, L. A., Konstantinov, G. M.
Format: Article
Language:English
Subjects:
Ferroelectricity
Physics
Physics and Astronomy
Solid State Physics
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Summary:The temperature-frequency dependences of the real and imaginary parts of the complex permittivity ɛ* of the PbFe 1/2 Nb 1/2 O 3 ceramics have been studied. It has been shown that, in the paraelectric phase, the relaxation extrema are formed in the dependences. An adequate description of the experimental spectra of ɛ* is possible using the model of an insulator with the distribution function of the relaxation times in the shape of a rectangle.
ISSN:1063-7834
1090-6460
DOI:10.1134/S106378341109023X