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https://open.uns.ac.rs/handle/123456789/3043
Nаziv: | Impedance response of pseudobrookite thick films with a sandwich configuration | Аutоri: | Luković, Miroljub Nikolić, Maria Vasiljević, Zorka Blaž, Nelu Luković, Snežana Aleksić, Obrad |
Dаtum izdаvаnjа: | 3-авг-2017 | Čаsоpis: | Proceedings of the International Spring Seminar on Electronics Technology | Sažetak: | © 2017 IEEE. We have investigated the impedance response of pseudobrookite thick films screen printed on alumina substrate in the temperature interval from room temperature to 350 °C in the frequency range 100 Hz-1 MHz. Two thick film pastes were made containing starting hematite and anatase nanopowders (in the 1:1 and 1:1.33 molar ratio - containing excess anatase), glass fritt and organic vehicle. A sandwich PdAg electrode structure was obtained by first printing a PdAg electrode, followed by 3 layers of PSB paste and a PdAg electrode on top with a mesh structure. Each layer was sintered at 850 °C in a hybrid conveyor furnace. XRD analysis confirmed the formation of pseudobrookite with an orthorhombic crystal structure. SEM analysis of thick film surfaces and cross sections showed the formation of a porous structure with rod-shaped grains. The impedance response of pseudobrookite thick films, showed a decrease with the rise in sample temperature. It was analyzed using an equivalent circuit reflecting the dominant influence of grain boundaries. | URI: | https://open.uns.ac.rs/handle/123456789/3043 | ISBN: | 9781538605820 | ISSN: | 21612528 | DOI: | 10.1109/ISSE.2017.8000886 |
Nаlаzi sе u kоlеkciјаmа: | FTN Publikacije/Publications |
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