Impedance spectra of mixed conductive silver vanadate-phosphate glasses

Electrical properties of glasses in the AgI–Ag 2O–V 2O 5–P 2O 5 system, which in general case exhibit mixed electronic–ionic conduction, were investigated. By thorough adjustment of the composition we have prepared glasses with comparable electronic and ionic contributions to the electrical conducti...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Veröffentlicht in:Solid state ionics 2003-02, Vol.157 (1), p.281-285
Hauptverfasser: Machowski, P., Garbarczyk, J.E., Wasiucionek, M.
Format: Artikel
Sprache:eng
Schlagworte:
Online-Zugang:Volltext
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung:Electrical properties of glasses in the AgI–Ag 2O–V 2O 5–P 2O 5 system, which in general case exhibit mixed electronic–ionic conduction, were investigated. By thorough adjustment of the composition we have prepared glasses with comparable electronic and ionic contributions to the electrical conductivity. The measured impedance spectra of these glasses indicate the important role of diffusion processes in charge transport. The spectra were analyzed numerically using an electrical equivalent circuit consisting of parallel electronic and ionic branches. The substantial role in the equivalent circuit is played by Warburg elements representing finite-length and semi-infinite diffusion phenomena occurring close to the electrodes.
ISSN:0167-2738
1872-7689
DOI:10.1016/S0167-2738(02)00222-9