Stress‐ and field‐induced dichroism of the vibrational absorption of OH− Molecules in alkali halides
- 1 January 1970
- journal article
- research article
- Published by Wiley in Physica Status Solidi (b)
- Vol. 42 (1) , 369-382
- https://doi.org/10.1002/pssb.19700420138
Abstract
This paper presents experimental data about the absorption band of the stretching vibration of OH− in RbCl, KBr, and KCl, and about the field‐ and stress‐induced dichroism of this band at low temperatures. For small concentrations (NOH < 10−4) the spectrum was found to consist of a single band with a halfwidth ≦ 0.1 cm−1 (LHeT). The experiments about the dichroism clearly indicate that for RbCl and KBr the molecule axis of the OH− is pointing along 〈100〉. For OH− in KCl the results are more complicated and cannot be explained completely. However, the general model of a 〈100〉 dipole seems to hold also for this system.Keywords
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