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Results are presented of complex studies on the structural, dielectric and pyroelectric properties and also on the electrical conductivity and Seebeck effect in samples of ceramic PbZrO3 + x Nb2O5 (where 0 < x ≤ 2% mol). Marked variations in these properties were observed when the concentration of Nb2O5 became greater than 1.2% mol. It was ascertained that this is connected with the creation of a large number of vacancies in the Pb sublattice.
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Ujma et al. (1991) studied this question.
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