Effect of TeO2 Addition on the Mobility of Silver Ions in Ag2O-B2O3-P2O5-TeO2 glasses

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216275%3A25310%2F16%3A39901464" target="_blank" >RIV/00216275:25310/16:39901464 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.4028/www.scientific.net/KEM.702.18" target="_blank" >http://dx.doi.org/10.4028/www.scientific.net/KEM.702.18</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.4028/www.scientific.net/KEM.702.18" target="_blank" >10.4028/www.scientific.net/KEM.702.18</a>

Result language

angličtina

Original language name

Effect of TeO2 Addition on the Mobility of Silver Ions in Ag2O-B2O3-P2O5-TeO2 glasses

Original language description

The effect of adding TeO2 into (100-x)[0.5Ag2OMINUS SIGN 0.1B2O3MINUS SIGN 0.4P2O5]MINUS SIGN xTeO2 glasses, with 0MINUS SIGN 80 mol% TeO2, on the structural changes and electrical properties has been investigated. The structure was studied by Raman spectroscopy and electrical properties have been studied over a wide temperature and frequency range by impedance spectroscopy. The addition of the third glass former, TeO2, to the glass network causes the structural transformation from TeO3 (tp) to TeO4 (tbp) which contributes to the changes in conductivity. The glasses with low TeO2 content show only a slow decrease in dc conductivity with addition of TeO2 due to the increase of the number of nonbridging oxygens, which increases the mobility of Ag+ ions. The steep decrease in conductivity for glasses containing more than 40 mol% TeO2 is a result of decrease of the Ag2O content and stronger cross-linkage in glass network through the formation of more Te-eqOax-Te bonds in TeO4 tbp units. The glasses obey scaling of the ac conductivity with respect to temperature indicating that the dynamic process is independent of temperature. However, the scaling of the spectra for different glasses revealed deviations from the Summerfield scaling due to the local structural disorder caused by structural transition in tellurite glass network.

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

JH - Ceramics, fire-proof materials and glass

OECD FORD branch

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Project

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Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2016

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection

Key Engineering Materials

ISBN

978-3-0357-1048-9

ISSN

1013-9826

e-ISSN

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Number of pages

5

Pages from-to

18-22

Publisher name

Trans Tech Publications

Place of publication

Zürich - Uetikon

Event location

Bangkok

Event date

Sep 20, 2015

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

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