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Ferroelectrics Volume 413, 2011 - Issue 1
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Original Articles

Long-Time Aftereffects and Relaxation in Piezoelectric Ceramics. 1. Linear Reversible Processes

D. V. Kuzenko Sci. & Technolog. Center “Reaktivelektron” of National Acad. Sci. of Ukraine, Donetsk, 83096, Ukraine; Donetsk National University, Physical Department, Donetsk, 83055, Ukraine
,
V. M. Ishchuk Sci. & Technolog. Center “Reaktivelektron” of National Acad. Sci. of Ukraine, Donetsk, 83096, Ukraine
,
A. I. Bazhin Donetsk National University, Physical Department, Donetsk, 83055, Ukraine
&
N. A. Spiridonov Sci. & Technolog. Center “Reaktivelektron” of National Acad. Sci. of Ukraine, Donetsk, 83096, Ukraine
Pages 29-36 | Received 26 Jul 2010, Published online: 30 Jun 2011
 
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Abstract

Results of experimental investigation of relaxational aging processes in Pb(Zr,Ti)O3 based solid solutions after action of DC and AC by electric fields, heating, uniaxial pressure are presented. The said process is long-time and is described by logarithmic function of time. For used in our experiments amplitudes of external excitations process of returning into the initial state is reversible. The criterion of a reversibility is linearly increasing dependence of the speed of a relaxation on amplitude of exciting force. A mechanism of long-time relaxation considering the entrapment of charges, evolved in the annealing process, by vacancies in PZT lattes is suggested.

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