Journal
APPLIED PHYSICS LETTERS
Volume 96, Issue 14, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.3367734
Keywords
dielectric hysteresis; dielectric polarisation; electrostriction; ferroelectric ceramics; ferroelectric transitions; lead compounds
Categories
Funding
- Technology Strategy Board
- UK National Measurement Office
- Servocell Ltd
- Diameter Ltd
- University of Southampton
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The temperature dependence of the strain, electric field, and polarization of lead zirconate titanate ceramic under unipolar electric fields up to 1.3 kV mm(-1) from -50 degrees C up to +200 degrees C is reported. An electrostrictive model is shown to describe the response to high levels of induced polarization and electric field below and above the ferroelectric to paraelectric transition. This is despite nonlinearity and hysteresis in the strain-field response. A linear strain-polarization response is shown to be an approximation to a quadratic electrostriction which is invalid at higher temperatures while the electrostriction holds across the temperature range.
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