Abstract
The dielectric properties of [001]-oriented 0.76Pb(Mg1/3Nb2/3)O3–0.24PbTiO3 (PMN–PT24) crystal were investigated as a function of frequency and temperature under hydrostatic pressure. The dependence of remnant polarization of the PMN–PT24 crystal on pressure was also measured. The results showed that both the temperature of the maximum dielectric permittivity T m and the depoling temperature T d of the PMN–PT24 crystal shifted to lower temperature, and the relaxor property became stronger with increasing hydrostatic pressure. The remnant polarization (P r) of the PMN–PT24 crystal decreased linearly with increasing pressure. Consequently, the hydrostatic piezoelectric coefficient, d h, was calculated.
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