Electrostrictive effect in perovskites and its transducer applications

Intensive investigation of the electrostrictive effects in ferroelectric and antiferroelectric perovskites have led to some empirical rules: the product of the electrostriction coefficient Q and the Curie-Weiss constant is constant for all perovskite crystals and the Q value is proportional to the s...

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Bibliographic Details
Published in:Journal of materials science 1981-03, Vol.16 (3), p.569-578
Main Authors: Uchino, Kenji, Nomura, Shoichiro, Cross, Leslie E., Newnham, Robert E., Jang, Sei J.
Format: Article
Language:English
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Summary:Intensive investigation of the electrostrictive effects in ferroelectric and antiferroelectric perovskites have led to some empirical rules: the product of the electrostriction coefficient Q and the Curie-Weiss constant is constant for all perovskite crystals and the Q value is proportional to the square of the thermal expansion coefficient. Consistent with these rules, the relaxor ferroelectric ceramic 0.9Pb(Mg1/3Nb2/3)O3-0.1PbTiO3 possesses much larger strain with lower hysteresis, ageing effects and thermal expansion than that obtained with piezoelectric lead zirconate. Using a multilayer configuration similar to commercial capacitors, a new mirror control device capable of large strains with high reproducibility, up to #L/L 10-3, with only 200 V applied has been developed. 10pp 11fig 1tab
ISSN:0022-2461
1573-4803
DOI:10.1007/bf02402772