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Results of the Rietveld X-ray diffraction analysis are presented for PbZr0.53Ti0.47O3, Pb0.95Sr0.05Zr0.53Ti0.47O3, PZT-19, and PZT-23 samples along with the results of studying their dielectric, piezo-, and pyroelectric properties. The samples are found to consist of a mixture of solid solutions having the perovskite structure with tetragonal (T), monoclinic (M), and rhombohedral (R) crystal lattices. Their weight fractions are 48T/39M/13R, 39T/61M, 49T/51M, and 72T/28M in the samples respectively. Main structural parameters of the phases are determined (unit cell symmetry and parameters of the phases, atomic coordinates and isotropic thermal displacements). The effect of the phase compositions of the samples on their electrophysical properties is discussed. Based on the results of the theoretical-group analysis, the conclusion is drawn that the observed differences in the ferroelectric and related (dielectric, piezoelectric) properties of the studied samples are due to: 1) concentration of monoclinic phase Cm, 2) structural parameters of the Cm phase.
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Fedulov et al. (2025) studied this question.
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