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Ternary system of lead-bismuth-borate glasses has been fabricated in three different compositions (PbO)x% -(Bi 2 O 3 )(50-x)% -(B 2 O 3 )50% with x = 5, 15 and 25 using the melt quench technique. The D.C. electrical transport mechanism has been discussed both in the low and high field regions. The coefficients of barrier lowering are calculated based on the Schottky and Poole-Frenkel conduction mechanisms. The refractive index and the high frequency dielectric constants for the prepared glass compositions are evaluated using the optical techniques. The observed decrease in the current level with the increase of the PbO contents is explained. The high field transport in these glasses is explained in terms of the Jonscher's modified model of the Poole-Frenkel phenomenon.

Nanocrystalline Lanthanum Molybdenum Oxide powders (having crystallite size from 67 nm-287 nm) and chemical composition: La2−xFexMo2O9 (x = 0.0, 0.012, 0.024, 0.036), synthesized by hydrothermal method is being reported in this research. XRD, SEM and EDS were used to study the structure, morphology, and chemical compositions respectively. Temperature dependent electrical and dialectic properties were examined at temperatures ranging from 300 K to 450 K. DC electrical conductivity was found to be increasing with increasing Fe3+ concentration. Furthermore, the measured dielectric loss was very small. It also exhibited a decreasing trend with increasing Fe3+ concentration. A lower dielectric loss makes such materials suitable potential candidates for applications in super capacitors.