Piezoelectric response and origin in (001) Pb(Mg1/3Nb2/3)0.70Ti0.30O3 crystal
作者： C-S Tu , C-M Hsieh , V Hugo Schmidt , RR Chien , H Luo
DOI: 10.1063/1.3012384
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摘要: Converse and direct piezoelectric coefficients (d33C d33D) of (001)-cut Pb(Mg1/3Nb2/3)0.70Ti0.30O3 (PMN-30%PT) single crystals have been investigated as a function poling electric (E) field. E-field-dependent domain structures were observed by using polarizing microscope. Both d33C d33D exhibit rapid increase at E=1–2 kV/cm reach maxima E=2.5–4 kV/cm. This study suggests that polarization rotation from rhombohedral to monoclinic MA phases plays an important role while the high response builds up. Overpoling phenomenon evidenced sudden reduction in coefficient with increasing field is very sensitive Ti content.
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