Electrical conductivity, relaxation, and scaling analysis studies of lithium alumino phosphate glasses and glass ceramics

• Published in: Journal of materials science Vol. 44; no. 20; pp. 5557 - 5562
• Main Authors: Sharma, M. V. N. V. D., Sarma, A. V., Balaji Rao, R.
• Format: Journal Article
• Language: English
• Published: Boston Springer US 01.10.2009; Springer Nature B.V
• Subjects: Aluminum; Aluminum phosphate; Characterization and Evaluation of Materials; Chemistry and Materials Science; Classical Mechanics; Conductivity; Crystallography and Scattering Methods; Electrical measurement; Electrical resistivity; Frequency ranges; Glass; Glass ceramics; Lithium; Lithium oxides; Materials Science; Mathematical analysis; Phosphate glass; Polymer Sciences; Resistivity; Solid Mechanics; Spectrum analysis; Conductivity Relaxation; Glass Sample; Bulk Conductivity; Glass Ceramic Sample; Electric Modulus
• ISSN: 0022-2461; 1573-4803
• DOI: 10.1007/s10853-009-3778-z

Different compositions of lithium aluminum phosphate glasses were prepared by melt quenching technique. The best bulk conductivity achieved by the sample G 3 , (28 mol% of lithium oxide). Further, the investigation extended by crystallizing the G 3 sample at different temperatures, 200 °C (GC 200 ), 300 °C(GC 300 ), 400 °C (GC 400 ), and 500 °C (GC 500 ). The electrical measurements for all the glasses and glass ceramics were carried out in the frequency range of 1–10 5  Hz and at a temperature range of 393–513 K by the impedance spectroscopy. The variation of conductivity with frequency of the samples was explained in the light of different valency states of aluminum ions. AC conductivity data are fitted to a power law equation. Scaled spectra for ac conductivity and modulus data suggested that the present glass samples follow temperature independent conductivity distribution relaxation mechanism.