CONDUCTIVITY STUDIES ON AGSBO3 CHANNEL STRUCTURE BY IMPEDANCE SPECTROSCOPY

Citation
H. Wiggers et al., CONDUCTIVITY STUDIES ON AGSBO3 CHANNEL STRUCTURE BY IMPEDANCE SPECTROSCOPY, Solid state ionics, 107(1-2), 1998, pp. 111-116
Citations number
24
Categorie Soggetti
Physics, Condensed Matter","Chemistry Physical
Journal title
ISSN journal
01672738
Volume
107
Issue
1-2
Year of publication
1998
Pages
111 - 116
Database
ISI
SICI code
0167-2738(1998)107:1-2<111:CSOACS>2.0.ZU;2-I
Abstract
The conductivity mechanism of AgSbO3 with defect pyrochlore structure was examined using complex impedance spectroscopy. The stoichiometric compound is a channel-type Ag- -ion conductor, while thermal treatment of the samples leads to the formation of metallic silver islands by a utoreduction transferring the polycrystalline material into a predomin antly electronic conductor. Electron transport originates from electro nic hopping supported by the metallic islands in the grain boundary ph ase.