Studies of silver–vanadate–phosphate glasses by Raman, EPR and impedance spectroscopy methods

Jerzy Garbarczyk , P Machowski , Marek Wasiucionek , L Tykarski , Rajmund Bacewicz , A Aleksiejuk


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).
Author Jerzy Garbarczyk (FP / SSID)
Jerzy Garbarczyk,,
- Solid State Ionics Division
, P Machowski - [Politechnika Warszawska]
P Machowski,,
, Marek Wasiucionek (FP / SSID)
Marek Wasiucionek,,
- Solid State Ionics Division
, L Tykarski - [Politechnika Warszawska]
L Tykarski,,
, Rajmund Bacewicz (FP / SD)
Rajmund Bacewicz,,
- Semiconductors Division
, A Aleksiejuk - [Warsaw University of Technology (PW)]
A Aleksiejuk,,
- Politechnika Warszawska
Journal seriesSolid State Ionics, ISSN 0167-2738
Issue year2000
Keywords in EnglishDTA, EPR, impedance spectroscopy, Mixed electronic–ionic conduction, Raman spectroscopy, Silver–vanadate–phosphate glasses
ASJC Classification3104 Condensed Matter Physics; 2500 General Materials Science; 1600 General Chemistry
Languageen angielski
Score (nominal)35
Score sourcejournalList
Publication indicators Scopus Citations = 63; WoS Citations = 60; GS Citations = 43.0; Scopus SNIP (Source Normalised Impact per Paper): 2000 = 1.312; WoS Impact Factor: 2006 = 2.19 (2) - 2007=2.228 (5)
Citation count*43 (2016-01-24)
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