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Alkali niobate and tantalate glasses have been prepared by rapid quenching. These glasses exhibit room-temperature ionic conductivities as high as 10−5 (Ω cm)−1 and electronic conductivities less than 10−11(Ω cm)−1. In the case of LiNbO3, the glass conductivity is many orders of magnitude greater than that of the single crystal. These conductivities are sufficiently high for rapidly quenched vitreous oxides to be considered for applications as solid electrolytes.

The optical transmission and indices of refraction for the cubic isomorph of ZrO(2) stabilized with 12.0-mol % Y(2)O(3) were measured at various temperatures and for a range of wavelengths from 0.36 to 5.1 microm. Index data to +/-5 x 10(-5) were fitted to a three-term Sellmeier equation. The value of N(D) = 2.15847. The dispersion N(G) - N(B) = 0.06044, while that for N(c) - N(f) = 0.03455. The temperature coefficient of the refractive index between 20 and 130 degrees C varies from 1.6 x 10(-5)/K for 0.36-microm radiation to 0.62 x 10(-5)/K for 1.6-microm radiation.