| Journal: | Brazilian journal of physics |
| Database: | PERIÓDICA |
| System number: | 000403511 |
| ISSN: | 0103-9733 |
| Authors: | Nadeem, M.Y1 Javed, Asim1 Wasiq, M.F1 |
| Institutions: | 1Bahauddin Zakariya University, Physics Department, Multan. Pakistán |
| Year: | 2009 |
| Season: | Jun |
| Volumen: | 39 |
| Number: | 2 |
| Pages: | 280-282 |
| Country: | Brasil |
| Language: | Inglés |
| Document type: | Artículo |
| Approach: | Analítico |
| English abstract | Ternary system of lead-bismuth-borate glasses has been fabricated in three different compositions (PbO)x% – (Bi2O3)(50-x)% – (B2O3)50% with x = 5, 15 and 25 using the melt quench technique. The D.C. electrical transport mechanism has been discussed both in the low and high field regions. The coefficients of barrier lowering are calculated based on the Schottky and Poole-Frenkel conduction mechanisms. The refractive index and the high frequency dielectric constants for the prepared glass compositions are evaluated using the optical techniques. The observed decrease in the current level with the increase of the PbO contents is explained. The high field transport in these glasses is explained in terms of the Jonscher’s modified model of the Poole-Frenkel phenomenon |
| Disciplines: | Física y astronomía, Ciencia y tecnología |
| Keyword: | Física de materia condensada, Ciencia, Vidrios de borato |
| Keyword: | Physics and astronomy, Science and technology, Condensed matter physics, Science, Borate glasses |
| Full text: | Texto completo (Ver PDF) |
