Spectra of Hydrogenated Calcium Fluoride Containing Rare-Earth Ions

G. D. Jones, S. Peled, S. Rosenwaks, S. Yatsiv

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Abstract

Hydrogenation of calcium fluoride containing rare-earth impurities results in the settlement of H- ions in various lattice positions. The electronic spectra of the rare-earth (RE) impurity ions, infrared absorption due to localized vibration of the H- ions, vibronic spectra of RE3+ + H- ion pairs, and the electron-spin-resonance (ESR) spectra of these pairs are mutually consistent in yielding the position and symmetry of the H- sites in the lattice. The location of the H- ions depends on the thermal treatment during and after the hydrogenation. This is observed by reversible and irreversible changes in the various spectra. Spectral changes due to isotopic substitution of H- by D- are described and analyzed.

Original languageEnglish
Pages (from-to)353-368
Number of pages16
JournalPhysical Review
Volume183
Issue number2
DOIs
StatePublished - 1 Dec 1969
Externally publishedYes

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