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Ion conduction in beryllium-alumino-silicate glasses doped with sodium or sodium and lithium ions
Linnéuniversitetet, Fakulteten för teknik (FTK), Institutionen för byggd miljö och energiteknik (BET). Gdańsk University of Technology, Poland.
Gdańsk University of Technology, Poland;Polish Academy of Science, Poland.
Gdańsk University of Technology, Poland. (Department of Solid State Physics, Faculty of Applied Physics and Mathematics, Gdańsk University of Technology, Narutowicza Street 11/12, 80–233 Gdańsk, Poland)
Linnéuniversitetet, Fakulteten för teknik (FTK), Institutionen för byggd miljö och energiteknik (BET). (Glass group)
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2019 (engelsk)Inngår i: Solid State Ionics, ISSN 0167-2738, E-ISSN 1872-7689, Vol. 341, s. 1-7, artikkel-id 115055Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Electrical properties of beryllium-alumino-silicate glasses containing sodium ions or sodium and lithium ions were studied with impedance spectroscopy technique over a frequency range from 10 mHz to 1 MHz and at temperature range from 213 to 473 K. The frequency- and temperature-dependent conductivity spectra of individual single alkali glasses were superimposed by means of the Summerfield scaling. Mixed-alkali glasses do not overlap into a single master curve. Glasses doped with sodium ions exhibit significantly higher values of D.C. conductivity and lower activation energy (~0.63 eV) than glasses doped with both sodium and lithium ions (~0.95 eV). The observed mixed-alkali effect can be described by the dynamic structure model (DSM). The conductivity pre-exponential factors and activation energy follow the Meyer-Neldel rule in both glass series. It was observed that the replacement of SiO2 by BeO in single cation glasses resulted in decrease in activation energy and pre-exponential factor σ0. In mixed cations glasses similar effect found for D.C. conduction process parameters was assigned to influence of both oxides BeO and Al2O3.

sted, utgiver, år, opplag, sider
Elsevier, 2019. Vol. 341, s. 1-7, artikkel-id 115055
Emneord [en]
D.C. conduction process Meyer-Neldel rule Anderson and Stuart model Beryllium-silicate glasses
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Forskningsprogram
Teknik, Glasteknologi
Identifikatorer
URN: urn:nbn:se:lnu:diva-88752DOI: 10.1016/j.ssi.2019.115055ISI: 000495479700026OAI: oai:DiVA.org:lnu-88752DiVA, id: diva2:1346133
Forskningsfinansiär
The Crafoord Foundation, 20160900ÅForsk (Ångpanneföreningen's Foundation for Research and Development), 14-457Vinnova, 2015-04809Tilgjengelig fra: 2019-08-27 Laget: 2019-08-27 Sist oppdatert: 2019-11-29bibliografisk kontrollert

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