Abstract
Glasses with the composition, [(30−x)V2O5–xBaTiO3–70 TeO2] with x=5, 10 and 15 (in mol%) were prepared. The amorphous nature and glassy characteristics of the samples were established via X-ray powder diffraction (XRD) and differential scanning calorimetry (DSC) respectively. The nanocrystalline of BaTiO3 embedded in the network glass matrix at x=15mol% were established by DSC which is confirmed by infrared spectroscopy study. Properties such as density, molar volume, dielectric constant, dielectric loss and AC conductivity, as a function of frequency (120Hz–100kHz) and temperature (300–500K), have been investigated. The trends of these properties are attributed to changes in the glass network structure and presence of nanocrystalline of BaTiO3. The sample at x=15mol% exhibited dielectric anomaly and the Curie–Weiss law was found to be valid at a temperature above the transition temperature (Tc).
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