Flexure-electrical effect in ferroelectric and paraelectric ceramics with perovskite structure

Author

Gridnev, Stanislav

Author_Institution

Dept. of Solid State Phys., Voronezh State Univ., Russia

Volume

2

fYear

1996

fDate

18-21 Aug 1996

Firstpage

891

Abstract

An electric voltage, arising across a sample of ferroelectric PZT or paraelectric SrTiO₃ ceramic with perovskite structure under an external bending stress, has been measured over a wide temperature range. Such a flexure-electrical effect occurs in any substance in the presence of a strain gradient. It was discovered that a.c. voltage arising on the sample faces normal to a strain gradient is directly proportional to the amplitude of sample vibrations and the sample thickness. A rather large value of a.c. voltage and its high temperature stability in the range of 20-200°C for both materials under study may be interesting from an applications point of view

Keywords

bending; dielectric polarisation; electromechanical effects; ferroelectric materials; lead compounds; piezoceramics; strontium compounds; vibrations; 20 to 200 C; AC voltage; PZT; PbZrO3TiO3; SrTiO₃; electric voltage; external bending stress; ferroelectric PZT ceramic; flexure-electrical effect; macroscopic polarization; nonlocal piezoelectric effect; paraelectric SrTiO₃ ceramic; perovskite structure; sample thickness; strain gradient; temperature stability; vibration amplitude; wide temperature range; Capacitive sensors; Ceramics; Ferroelectric materials; Liquid crystals; Strain measurement; Temperature distribution; Temperature sensors; Titanium compounds; Vibrations; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Applications of Ferroelectrics, 1996. ISAF '96., Proceedings of the Tenth IEEE International Symposium on

Conference_Location

East Brunswick, NJ

Print_ISBN

0-7803-3355-1

Type

conf

DOI

10.1109/ISAF.1996.598169

Filename

598169