The localized vibrations of Sr2+-H-and Ba2+-H-pairs in calcium fluoride
- 7 October 1971
- journal article
- Published by IOP Publishing in Journal of Physics C: Solid State Physics
- Vol. 4 (14) , 1977-1982
- https://doi.org/10.1088/0022-3719/4/14/012
Abstract
Infrared absorption from the fundamental local mode vibrations of substitutional H- ions (U centres) paired with Sr2+ and Ba2+ impurities in calcium fluoride has been observed. The spectra include absorption peaks near 965 cm-1 which are shown to be due to two distinct types of centre, depending on whether the hydride ions occupy first or second neighbour fluorine ion sites to the alkaline earth impurity. The results are compared with those obtained previously for hydride ions paired with divalent rare earth ions in the same host lattice and with cation impurities in various mixed alkali halide crystals.Keywords
This publication has 6 references indexed in Scilit:
- The localized vibrations of hydride ions paired with divalent rare-earth impurities in calcium fluorideJournal of Physics C: Solid State Physics, 1971
- Lattice-vibration local modes due to U-centers in mixed alkali halidesSolid State Communications, 1968
- Local Mode Absorption by U‐Centres in Alkali‐Halide Mixed CrystalsPhysica Status Solidi (b), 1967
- Influence of Additional Cation Impurities on Localized Vibration Modes Due toCenters in NaCl and KClPhysical Review Letters, 1966
- Localized vibrations of H – and D – ions in the alkaline earth fluoridesProceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences, 1965
- Electron Spin Resonance of Hydrogen Atoms in CaPhysical Review B, 1962