One‐Phonon Relaxation of Hydroxyl Ions in Alkali Halide Crystals

1 January 1968

journal article
research article
Published by Wiley in Physica Status Solidi (b)

Vol. 29 (2) , 587-596
https://doi.org/10.1002/pssb.19680290208

Abstract

An expression is derived for transition rates of OH⁻ dipole orientation in alkali halides due to one‐phonon assisted tunneling. This rate is expressed in terms of host crystal constants, a stress energy splitting parameter, and a tunneling matrix element. Comparison of calculated and observed relaxation rates for KCl implies that the tunneling matrix element deduced from the one‐phonon relaxation time is about an order of magnitude smaller than that deduced from recent paraelectric resonance experiments.

Keywords

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