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Electrodiffusion of alkali ions in alkali niobophosphate glasses and glass‐forming melts
Author(s) -
Markov Viktor A.,
Sokolov Ivan A.,
Kurushkin Mikhail V.,
Povolotskiy Alexey V.
Publication year - 2019
Publication title -
international journal of applied glass science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.383
H-Index - 34
eISSN - 2041-1294
pISSN - 2041-1286
DOI - 10.1111/ijag.12435
Subject(s) - alkali metal , materials science , ion , diffusion , activation energy , glass transition , analytical chemistry (journal) , thermodynamics , inorganic chemistry , chemistry , composite material , polymer , organic chemistry , physics
Electrical conductivity of Li(Na,K) 2 O‐Nb 2 O 5 ‐P 2 O 5 glasses and glass‐forming melts has been measured in a wide temperature range (298‐1173 K). Logarithm of the preexponential factor and activation energy of migration have been determined. Mixed alkali effect has been observed in niobophosphate glass‐forming melts. Diffusion coefficients for Li + , Na + , and K + ions have been calculated. The influence of the type of alkali ion and Nb 2 O 5 content on the diffusion coefficients has been determined.