Electrical conductivity, relaxation, and scaling analysis studies of lithium alumino phosphate glasses and glass ceramics
| Autor: | R. Balaji Rao, M. V. N. V. D. Sharma, A. V. Sarma |
|---|---|
| Rok vydání: | 2009 |
| Předmět: |
Materials science
Mechanical Engineering Analytical chemistry chemistry.chemical_element Mineralogy Atmospheric temperature range Conductivity Dielectric spectroscopy chemistry.chemical_compound chemistry Mechanics of Materials Electrical resistivity and conductivity Relaxation (physics) General Materials Science Lithium Electrical measurements Lithium oxide |
| Zdroj: | Journal of Materials Science. 44:5557-5562 |
| ISSN: | 1573-4803 0022-2461 |
| DOI: | 10.1007/s10853-009-3778-z |
| Popis: | Different compositions of lithium aluminum phosphate glasses were prepared by melt quenching technique. The best bulk conductivity achieved by the sample G3, (28 mol% of lithium oxide). Further, the investigation extended by crystallizing the G3 sample at different temperatures, 200 °C (GC200), 300 °C(GC300), 400 °C (GC400), and 500 °C (GC500). The electrical measurements for all the glasses and glass ceramics were carried out in the frequency range of 1–105 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. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|