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Dielectric, piezoelectric and electrical study of 0.65PMN-0.20PZT-0.15PT relaxor ceramic

Published online by Cambridge University Press:  18 May 2011

M. Ghasemifard
M. Ghasemifard*
Affiliation:
Department of Physics, Shahid Beheshti University, Tehran, Iran
*
ae-mail: [email protected]
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Abstract

The dielectric, piezoelectric and electrical properties of relaxor ferroelectric 0.65PMN-0.20PZT-0.15PT ceramic as a function of sintering temperatures was investigated. X-ray diffraction shows that with increasing temperature from 700 °C to 800 °C the pyrochlore unwanted phase reduces and at 850 °C the single phase of perovskite be formed. The studies and reviews reveal that the outstanding electrical properties are obtained with this composition near the morphotropic phase boundary (MPB). P-E hysteresis loops emphasize that the synthesis optimum temperature is 1250 °C and observed that the best temperature that led to improved properties of dielectric constant, polarization and piezoelectric coefficients is this temperature.

Type
Research Article
Information
The European Physical Journal - Applied Physics , Volume 54 , Issue 2: Focus on Fuel Cells 2009 , May 2011 , 20701
Copyright
© EDP Sciences, 2011

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