Journal
SOLID STATE IONICS
Volume 136, Issue -, Pages 1077-1083Publisher
ELSEVIER
DOI: 10.1016/S0167-2738(00)00504-X
Keywords
silver-vanadate-phosphate glasses; mixed electronic-ionic conduction; impedance spectroscopy; Raman spectroscopy; EPR; DTA
Categories
Ask authors/readers for more resources
Four different series of AgI-Ag2O-V2O5-P2O5 glasses have been prepared, in a wide range of compositions defined by the ratio of r = [Ag2O]/[V2O5 + P2O5] and a parameter x (mol.% of AgI). DTA and Raman scattering experiments reveal that the glass-networks of the investigated glasses are determined mainly by r values, and the x (up to 40%) parameter plays a secondary role. EPR spectra show that the interactions between vanadium centers (which are essential for electronic hopping) strongly depend on crosslinking of the glass network. They dramatically weaken if the glass-network is broken by addition of a large amount of a glass-modifier (Ag2O). Depending on values of r and x the character of electric conduction of the studied glasses changes from purely electronic through mixed to predominantly ionic (via Ag+ cations). (C) 2000 Elsevier Science B.V. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available