Ferroelectric behavior and microstructure of calcium-modified lead titanate ceramics

Zhiqiang Zhuang, G. A. Kulesha, H. Du, B. Gallois

Research output: Contribution to journalConference articlepeer-review

1 Scopus citations

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.

Original languageEnglish
Pages (from-to)9-14
Number of pages6
JournalMaterials Research Society Symposium Proceedings
Volume360
StatePublished - 1995
EventProceedings of the 1994 MRS Fall Meeting - Boston, MA, USA
Duration: 28 Nov 199430 Nov 1994

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