Abstract
Transparent BaNaB9O15 (BNBO) glasses were fabricated via the conventional melt-quenching technique. X-ray powder diffraction combined with differential scanning calorimetric studies carried out on as-quenched samples confirmed their amorphous and glassy nature, respectively. The dielectric constants in the 1 kHz–10 MHz frequency range for BNBO glasses were determined as a function of the temperature (300–1023 K). The dielectric constant for the as-quenched glass increased with increasing temperature, exhibiting anomalies in the vicinity of the glass transition and crystallization temperatures. The frequency dependent characteristics of conductivity and dielectric constant were analysed using a derivative solution of Jonscher's power law.
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