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The Influence of Thin Gold Electrodes on the High-Temperature Impedance of Oxide Glasses

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.

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Keywords

Details

Category:
Articles
Type:
artykuły w czasopismach
Published in:
Coatings no. 12,
ISSN: 2079-6412
Language:
English
Publication year:
2022
Bibliographic description:
Wójcik N., Barczyński R.: The Influence of Thin Gold Electrodes on the High-Temperature Impedance of Oxide Glasses// Coatings -Vol. 12,iss. 6 (2022), s.784-
DOI:
Digital Object Identifier (open in new tab) 10.3390/coatings12060784
Sources of funding:
  • Free publication
Verified by:
Gdańsk University of Technology

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