Different inner vibrational modes (stretching, bending and their combination) of the OH- ion perturbed by lattice defects induced by Mg2+ in NaF have been put in evidence and studied by means of optical absorption spectroscopy in the 600–7200 cm-1 wavenumber range, in the 9–300K temperature range, and for Mg2+ molar concentration ranging between 10“4 and 10~3. Electrical and mechanical anharmonicity effects have been detected for the stretching modes and analyzed in the framework of the anharrnonic oscillator model for a diatomic molecule.
ASJC Scopus subject areas
- Materials Science(all)
- Nuclear and High Energy Physics
- Condensed Matter Physics