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Данная работа посвящена изучению образцов монокристалла Pb[Zr ₀. ₉ ₈ ₉Ti ₀. ₀₁₁]O₃ (PZT 1.1) и керамики 0.8Pb[Mg ₁/₃Nb ₂/₃]O₃ - 0.2PbTiO₃ (PMN PT20). Керамика PMN PT20 измерялась методом диэлектрической спектроскопии. Для PMN PT20 обнаружены два фазовых перехода, определены их температуры и зависимость от внешнего поля. Оба образца были измерены с помощью пьезоэлектрической силовой микроскопии. Проведены поляризационные эксперименты. Кристалл PZT показал различный пьезоэлектрический отклик на разных участках поверхности образца, что говорит о его неоднородности.
The samples of Pb[Zr ₀. ₉ ₈ ₉Ti ₀. ₀₁₁]O₃ (PZT 1.1) single crystal and 0.8Pb[Mg ₁/₃Nb ₂/₃]O₃ - 0.2PbTiO₃ (PMN PT20) ceramics were investigated. PMN PT20 ceramics was measured with the dielectric spectroscopy method. For PMN PT20 two phase transitions were observed, their temperatures were determined, and their dependence on an external field. Both samples were measured with piezoresponse force microscopy (PFM). Polarization experiments were provided. The PZT crystal showed a different piezoelectric response at different areas of the sample surface, which corresponds to its inhomogeneity.
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