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Phase equilibria in the BaTiO3–La2TiO5–TiO2 system

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Abstract

Subsolidus phase relations in the BaTiO3–La2TiO5–TiO2 part of the ternary BaO–La2O3–TiO2 system at 1300 °C in air were determined. The phases were characterized by x-ray diffraction, scanning electron microscopy, and electron probe wavelength dispersive spectroscopic microanalysis. A combination of techniques was employed because of insensitivity in detecting secondary phases by x-ray diffraction. The location and extent of Ba6−xLa8+2x/3Ti18O54 ternary solid solution 0.2(1) ⩽ x ⩽ 2.3(1) and Ba1−yLayTi1−y/4 (VTi)y/4O3 binary solid solution 0 ⩽ y ⩽ 0.3 at 1300 °C was established. Tie lines between various barium polytitanates with a sequence of Ba6−xLa8+2x/3Ti18O54 solid solution regions were determined.

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Authors and Affiliations

  1. Department of Ceramics, “Jožef Stefan” Institute, Jamova 39, Ljubljana, 1111, Slovenia

    Srečo Škapin, Drago Kolar, Danilo Suvorov & Zoran Samardžija

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  1. Srečo Škapin
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  2. Drago Kolar
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  3. Danilo Suvorov
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  4. Zoran Samardžija
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Škapin, S., Kolar, D., Suvorov, D. et al. Phase equilibria in the BaTiO3–La2TiO5–TiO2 system. Journal of Materials Research 13, 1327–1334 (1998). https://doi.org/10.1557/JMR.1998.0188

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  • DOI: https://doi.org/10.1557/JMR.1998.0188

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