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Electrically-Induced Strains in Sn-Modified Lead Zirconate Titanate

Published online by Cambridge University Press:  16 February 2011

Jie-Fang Li ,
Xunhu Dai ,
Donald Forst  and
Dwight Viehland
Jie-Fang Li
Affiliation:
Department of Materials Science and Engineering and the Materials Research Laboratory, University of Illinois, Urbana, IL 61801
Xunhu Dai
Affiliation:
Department of Materials Science and Engineering and the Materials Research Laboratory, University of Illinois, Urbana, IL 61801
Donald Forst
Affiliation:
Department of Materials Science and Engineering and the Materials Research Laboratory, University of Illinois, Urbana, IL 61801
Dwight Viehland
Affiliation:
Department of Materials Science and Engineering and the Materials Research Laboratory, University of Illinois, Urbana, IL 61801
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Abstract

Incommensuate antiferroelectric tin-modified lead zirconate titanate ceramics, PbNb0.02[(Zr1−x,Snx)1−yTiy]0.98O3, have been studied by Sawyer-Tower polarization and electrically-induced strain (ε-E) techniques. Sawyer-Tower polarization studies revealed antiferroelectric-ferroelectric (AFE-FE) P-E loops. Investigations then revealed that the electrically-induced strain associated with the AFE-FE transformation was not realized until field strengths significantly above that required for polarization saturation. It is believed that the electrically-induced strain is decoupled from the polarization due to AFEFE switching by the modulation of the phase of a <110> incommensurate structure. At field strengths above saturation, the commensurate rhombohedral ferroelectric state is believed to be induced from an incommensurate orthorhombic ferroelectric, and the electrically-induced strain is then realized.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 360 , 1994 , 3
Copyright
Copyright © Materials Research Society 1995

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