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Temperature Dependence of High Field Characteristics in PMN-PT-BT Ceramics Containing Chemical Additives

Published online by Cambridge University Press:  15 February 2011

Yong S. Cho ,
Chang H. Yoon ,
Steven M. Pilgrim  and
Keith Bridger
Yong S. Cho
Affiliation:
Currently with E. I. du Pont de Nemours and Company, Inc., Research Triangle Park, NC 27709
Chang H. Yoon
Affiliation:
New York State College of Ceramics atAlfred University, Alfred, NY 14802
Steven M. Pilgrim
Affiliation:
New York State College of Ceramics atAlfred University, Alfred, NY 14802
Keith Bridger
Affiliation:
Active Signal Technologies, Cockeysville, MD 21030
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Abstract

A chemical additive method was used to modify the composition and resultant properties of a commercially available 0.96(0.9lPb(Mg1/3Nb2/3)O3 - 0.09PbTiO3) - 0.04 BaTiO3 (PMN-PT-BT) ceramic. Without an additional ball-mixing process, several combinations of minor additives such as Fe, Ba, Sr, Zn and Ti were incorporated by the chemical method. Weak- and high-field characteristics including dielectric properties, induced strain and polarization, and associated hystereses were evaluated for the samples sintered at 1200°C for 4 hrs. All properties were found to depend on the chemical additives and temperature. Especially, the temperature dependence of high-field characteristics revealed different behavior from that reported for conventionally-prepared samples. For example, the samples containing 0.5 wt% SrO, 0.5 wt% ZnO, and 0.5wt% TiO2 did not exhibit a transition to piezoelectric behavior at the temperature expected from the dielectric measurements. Overall, the coating process has been successfully used to modify, and in some cases, enhance the high-field characteristics of PMN-based ceramics for electromechanical uses.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 604: Symposium LL – Materials for Smart Systems III , 1999 , 209
Copyright
Copyright © Materials Research Society 2000

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