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Thermally Stimulated Currents and Alkali‐Ion Motion in Silicate Glasses
Author(s) -
AGARWAL ANIL K.,
DAY DELBERT E.
Publication year - 1982
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1982.tb10367.x
Subject(s) - silicate glass , alkali metal , silicate , ion , materials science , mineralogy , composite material , chemical physics , chemical engineering , chemistry , organic chemistry , engineering
The thermally stimulated polarizatioddepolarization (TSPC/TSDC) current technique is used to investigate alkali‐ion motion in silicate glasses. lbo TSDC peaks are observed in all these glasses along with the dc conduction current at high temperatures. The low‐temperature TSDC peak magnitude is essentially constant, but the second TSDC peak magnitude varies with the type of alkali ion present in these glasses. Based on a proposed model, the two TSDC peaks are interpreted in terms of the localized alkali‐ion motion around the nonbridging oxygen ion and through the limited conduction pathways, respectively.