Influence of OH − ions on infrared absorption and ionic conductivity in lithium fluoride crystals

The presence of OH − ions in LiF crystals is found to depress the ionic conductivity by up to two orders of magnitude compared with crystals of the same doping level but which are relatively free of OH −. The presence of OH − in these crystals gives rise to two types of infrared absorption spectra:...

Full description

Saved in:
Bibliographic Details
Published in:The Journal of physics and chemistry of solids 1967-01, Vol.28 (8), p.1375-1382
Main Author: Stoebe, Thomas G.
Format: Article
Language:English
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The presence of OH − ions in LiF crystals is found to depress the ionic conductivity by up to two orders of magnitude compared with crystals of the same doping level but which are relatively free of OH −. The presence of OH − in these crystals gives rise to two types of infrared absorption spectra: a broad line at 2.68 μ in “pure” crystals and a sharp line spectrum between 2.71 and 2.83 μ in Mg-doped crystals. The properties associated with these absorption spectra are discussed, and the results explained in terms of the formation of Mg 2+−OH − complexes which remove vacancies from the system and thus depress the conductivity.
ISSN:0022-3697
1879-2553
DOI:10.1016/0022-3697(67)90266-1