Non-stoichiometry and optical spectra of Nd(III) substituted PbTiO3

J. Bouwma, M.A. Heilbron

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The non-stoichiometry of the perovskite (ABO3)-type phase in the system PbO---TiO2-Nd2O3 has been studied. Monophasic compounds of composition Pb1−αxNdxTiO3+x(1.5−α) with x ≤ 0.21 and 0.09 ≲ α ≲ 1.5 were prepared. The ferroelectric Curie temperature (Tc) shows a decrease of 18.5 K/at% Nd with increasing value of x. Tc shows an increase of 3.5 K/mol % PbO with decreasing value of α (increasing content of PbO). The observed effect of α on optical spectra can be interpreted by assuming that Nd(III) ions partly occupy B sites in compounds with α < 1.5.
Original languageEnglish
Pages (from-to)663-668
JournalMaterials research bulletin
Issue number6
Publication statusPublished - 1976


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