Thermal physical properties of ferroelectric ceramics PKR-7M near the diffuse phase transition

The thermal physical properties (heat capacity, thermal expansion coefficient, and deformation) of a relaxor piezoelectric ceramics based on the lead zirconate titanate PKR-7M have been studied in the temperature range 200–800 K. Diffuse anomalies have been revealed in the temperature dependences of...

Full description

Saved in:
Bibliographic Details
Published inPhysics of the solid state Vol. 53; no. 7; pp. 1378 - 1382
Main Authors Kallaev, S. N., Omarov, Z. M., Mitarov, R. G., Sadykov, S. A.
Format Journal Article
LanguageEnglish
Published Dordrecht SP MAIK Nauka/Interperiodica 01.07.2011
Springer
Subjects
Analysis
Ceramic materials
Ceramics
Ferroelectricity
Physics
Physics and Astronomy
Solid State Physics
Thermal properties
Toy industry
Lead Zirconate Titanate
Thermal Expansion Coefficient
Heat Capacity
Ferroelectric Ceramic
Diffuse Phase Transition
Online AccessGet full text

Cover

More Information
Summary:The thermal physical properties (heat capacity, thermal expansion coefficient, and deformation) of a relaxor piezoelectric ceramics based on the lead zirconate titanate PKR-7M have been studied in the temperature range 200–800 K. Diffuse anomalies have been revealed in the temperature dependences of the heat capacity and thermal expansion over wide temperature ranges 270–650 and 450–600 K, respectively. It has been shown that the anomalous behavior of the heat capacity is due to the manifestation of two-level states (Schottky anomalies). The results of the study have been discussed together with the data of structural studies.
ISSN:1063-7834
1090-6460
DOI:10.1134/S106378341107016X