Ion conduction in beryllium-alumino-silicate glasses doped with sodium or sodium and lithium ions - Publication - Bridge of Knowledge

Search

Ion conduction in beryllium-alumino-silicate glasses doped with sodium or sodium and lithium ions

Abstract

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.

Citations

  • 7

    CrossRef

  • 7

    Web of Science

  • 7

    Scopus

Cite as

Full text

full text is not available in portal

Keywords

Details

Category:
Articles
Type:
artykuły w czasopismach
Published in:
SOLID STATE IONICS no. 341, pages 1 - 7,
ISSN: 0167-2738
Language:
English
Publication year:
2019
DOI:
Digital Object Identifier (open in new tab) 10.1016/j.ssi.2019.115055
Verified by:
Gdańsk University of Technology

seen 73 times

Recommended for you

Meta Tags