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The glass transition temperature and electrical conductivity in the temperature range 325 K to 525 K have been investigated in a set of La 2 O doped vanado-phosphate glasses. The measured variation of density and glass transition temperature with La 2 O content revealed that glass network becomes continuously loose packed with increasing La 2 O content. Conductivity variation...
Vanadotellurite and vanado-cobalt tellurite glasses were investigated for dielectric properties in the frequency range 50Hz to 5MHz and temperature range 300–500K. Hunt's model has been invoked to analyze the data and the results indicated that the relaxation process has a local character and can be described by hops between each pair of sites. Activation energies for dielectric loss process were...
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