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Abstract
The effect of hydrostatic pressure on the dielectric response of PLZT 9.5/65/35 relaxor was studied on cooling the samples from temperatures higher than Tε′max to avoid the influence of spontaneous aging. The dielectric anomaly, characteristic of classical relaxor, was found to be suppressed and shifted downwards at elevated pressures. The pressure coefficient dTε′max/dp = −(20.4 ± 0.9)K/GPa is considerably smaller than that reported for PLZT 6/65/35 and PLZT 12/40/60, which exhibit weak relaxor behavior and spontaneous transition to the ferroelectric state.
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ACKNOWLEDGMENT
One of us (A.H.) acknowledges the support of Grant 1 P03B 11027 from the Committee of Scientific Researched in Poland that enabled the work on relaxors under pressure.