Thermal and electrical relaxation studies in Li(4+x)Ti x Nb1−x P3O12 (0.0 ≤ x ≤ 1.0) phosphate glasses

Abstract: A new superionic conducting transparent phosphate glasses with composition Li(4+x)Ti x Nb1−x P3O12 (0 ≤ x ≤ 1.0) were prepared by rapid melt quenching. As quenched samples were characterized by X-ray powder diffraction, differential scanning calorimetric and Fourier transform infrared spectroscopy studies. These glasses were found to have high thermal stability parameter and Li4NbP3O12 has been found to have high glass forming ability. Electrical properties of the present glasses were studied by impedance and dielectric spectroscopy in the frequency range 10 Hz–3 MHz in the temperature range 323–523 K. Arrhenius behavior has been observed for all the glass in conductivity, dielectric loss and conductivity relaxation and their activation energies are explained and reported. [Copyright &y& Elsevier]