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- Title
The Influence of Thin Gold Electrodes on the High-Temperature Impedance of Oxide Glasses.
- Authors
Wójcik, Natalia Anna; Barczyński, Ryszard Jan
- Abstract
The influence of thin gold electrodes on the electrical measurements of glasses at high temperatures was studied using impedance spectroscopy. The impedance was measured several times over a wide frequency range from 10 mHz to 1 MHz and the temperature ranged from 213 to 673 K under air and nitrogen atmospheres. The results showed a drop in the conductivity of more than an order of magnitude at a temperature around 603 K during heating. An additional relaxation process was found at the low-frequency region. The occurred process was correlated with the thermal disintegration of the gold nano-layer used as an improvement in the electrical contact. The possible ambiguous interpretation of high-temperature impedance spectra was presented as a consequence of performing the electrical measurements only during heating or cooling while using unstable thin gold electrodes. Moreover, a possible solution to this problem was proposed.
- Subjects
GOLD electrodes; PYROMETRY; ATMOSPHERIC nitrogen; IMPEDANCE spectroscopy
- Publication
Coatings (2079-6412), 2022, Vol 12, Issue 6, p784
- ISSN
2079-6412
- Publication type
Article
- DOI
10.3390/coatings12060784