Electrical conductivities of mixed cation phosphate glasses

  • Sakka S
  • Isobe T
  • Matusita K
  • 3

    Readers

    Mendeley users who have this article in their library.
  • 3

    Citations

    Citations of this article.

Abstract

In order to examine the cause of the mixed alkali effect in phosphate glasses, the electrical conductivities of (33.3-x)Na2O·xRnOm·8.4Al2O3·58.3P2O5glasses, where RnOmis Li2O, K2O, MgO, CaO, and BaO, were measured from room temperature to 400°C. It was found that the mobility of alkali ions of one type decreased whenever they were partially substituted by alkali ions of another type or alkaline earth ions, and that the decrease in the mobility of the alkali ions is not characteristic of mixed alkali glasses but common to mixed cation glasses where alkali ions are substituted by any other cations. The decrease in the mobility can be explained on the basis of the independent-path model in which it is assumed that cations can move only through vacant sites left by those of the same type. Thus the mixed cation effect in phosphate glasses was found to be essentially the same as that in silicate glasses. © 1981.

Get free article suggestions today

Mendeley saves you time finding and organizing research

Sign up here
Already have an account ?Sign in

Find this document

Authors

  • S. Sakka

  • T. Isobe

  • K. Matusita

Cite this document

Choose a citation style from the tabs below

Save time finding and organizing research with Mendeley

Sign up for free