期刊
SOLID STATE IONICS
卷 157, 期 1-4, 页码 269-273出版社
ELSEVIER
DOI: 10.1016/S0167-2738(02)00220-5
关键词
mixed electronic-ionic conductivity; AgI-Ag2O-V2O5-P2O5 glasses; ion-polaron effect; impedance spectroscopy
Mixed conductive silver vanadate-phosphate glasses were prepared and their electrical properties were studied. Compositions of the glasses were characterized by parameters: x (AgI content) and r=[Ag2O]/[V2O5 + P2O5]. Total conductivity sigma(t) (x, r = constant) of a series of samples with fixed r values exhibited minima when plotted vs. x. The conductivity minima were accompanied by maxima of apparent activation energy E-t (x, r =constant). The observed dependencies were attributed to the ion-polaron effect (IPE), i.e. to electrostatic attraction between mobile species: electrons (polarons) and Ag+ ions. (C) 2002 Elsevier Science B.V. All rights reserved.
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