Journal
JOURNAL OF PHYSICS-CONDENSED MATTER
Volume 13, Issue 17, Pages 3875-3881Publisher
IOP PUBLISHING LTD
DOI: 10.1088/0953-8984/13/17/308
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Piezoelectric and dielectric measurements were performed on different batches of polarized NaNbO3 ceramics. It has been established that, as a result of polarization, in these ceramics there appears a metastable ferroelectric phase existing for a long time. The presence of this phase manifests itself as a piezoelectric effect accompanied by a piezoresonance dispersion of the dielectric permittivity. The magnitudes and temperature dependencies of the piezoelectric coefficients d(33) of the NaNbO3 ceramics were measured for the first time.
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