Abstract
La2(Mo1 – x M x )2O9 (M = Nb, Ta; 0 < x ≤ 0.2) solid solutions were prepared, and their physicochemical and electrical properties were studied. Second harmonic generation measurements indicate that the solid solutions have a noncentrosymmetric structure and undergo a structural phase transition accompanied by a sharp increase in ionic conductivity, similar to that of La2Mo2O9 . The transition temperature is found to decrease with increasing Nb or Ta content. The introduction of 5 wt % Nb increases the 800°C conductivity of the material.
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Khadasheva, Z.S., Venskovskii, N.U., Safronenko, M.G. et al. Synthesis and Properties of La2(Mo1 – x M x )2O9 (M = Nb, Ta) Ionic Conductors. Inorganic Materials 38, 1168–1171 (2002). https://doi.org/10.1023/A:1020978902757
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DOI: https://doi.org/10.1023/A:1020978902757