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Abstract
Nonlinear a.c. impedance measurements were performed in Cu2O-Al2O3-SiO2 glass in wide frequency range. The obtained results shows that a large nonlinearity in the impedance signal is observed at moderate electric fields of an order 1V/mm. The contents of the third harmonics reaches about 10% and strongly depends on temperature and frequency. The investigated glass exhibits mixed electronic-ionic conductivity. Electronic conduction occurs by small polaron hopping between Cu+ and Cu2+ ions. On the other hand, Cu+ ions movement is responsible for ionic conductivity. We believe that both processes modify each other in a complicated way and the impedance should not be considered linear any more.
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- Category:
- Articles
- Type:
- artykuł w czasopiśmie wyróżnionym w JCR
- Published in:
-
JOURNAL OF NON-CRYSTALLINE SOLIDS
no. 356,
ISSN: 0022-3093 - Language:
- English
- Publication year:
- 2010
- Bibliographic description:
- Barczyński R.: Nonlinear Impedance as Possible Result of Ion-Polaron Interaction in Cu2O-Al2O3-SiO2 Glass// JOURNAL OF NON-CRYSTALLINE SOLIDS. -Vol. 356, nr. Iss. 37-40 (2010),
- Verified by:
- Gdańsk University of Technology
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