Abstract
The structural parameters of yttrium-doped (Ba,Pb)TiO3 solid solutions containing low-melting B2O3–PbO–SiO2 (BPS) glass additions were determined by Rietveld powder-diffraction analysis. It is shown that the introduction of BPS enables dense, semiconducting ceramics containing up to 60 mol % PbTiO3 to be produced by solid-state reactions followed by sintering at markedly reduced temperatures. Increasing the Pb content increases the lattice strain in the solid solutions, while BPS additions have the opposite effect. Sintering of BPS-containing materials leads to the formation of (Ва1 – χ – y PbχY y )(Ti1 – δPbδ)O3 solid solutions on grain surfaces (core–shell structure).
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Yanchevskii, O.Z., V'yunov, O.I. & Belous, A.G. Fabrication and Properties of Semiconducting Barium Lead Titanate Ceramics Containing Low-Melting Glass Additions. Inorganic Materials 39, 645–651 (2003). https://doi.org/10.1023/A:1024069707870
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DOI: https://doi.org/10.1023/A:1024069707870