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Ferroelectric Behavior and Microstructure of Calcium-Modified Lead Titanate Ceramics

Published online by Cambridge University Press:  16 February 2011

Zhiqiang Zhuang ,
G.A. Kulesha ,
H. Du  and
B. Gallois
Zhiqiang Zhuang
Affiliation:
South China University of Technology, Department of Inorganic Materials Science and Engineering, Guangzhou, China 510641
G.A. Kulesha
Affiliation:
Stevens Institute of Technology, Department of Materials Science and Engineering, Hoboken, NJ 07030
H. Du
Affiliation:
South China University of Technology, Department of Inorganic Materials Science and Engineering, Guangzhou, China 510641
B. Gallois
Affiliation:
Stevens Institute of Technology, Department of Materials Science and Engineering, Hoboken, NJ 07030
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Abstract

Calcium-doped lead titanate ceramics exhibiting piezoelectric anisotropy were fabricated for applications in ultrasonic transducers, infrared detectors and surface acoustic wave devices. Transmission electron microscopy and X-ray diffraction techniques were used to characterize the development of the piezoelectric anisotropy and the dependence of the piezoelectric anisotropy on microstructure. Electron diffraction patterns indicated that most of the ferroelectric domains in samples with [CaA] up to 30 mole% were 90° domains. The size of the ferroelectric domains was not related to piezoelectric anisotropy. Ferroelectric domains could not be detected above this concentration. Measurements of the temperature dependence of dielectric properties at different frequencies did not show any ferroelectric relaxor behavior.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 360 , 1994 , 9
Copyright
Copyright © Materials Research Society 1995

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