Abstract
AbstractInfrared absorption bands due to the fundamental and the overtone of OH and OD stretch modes are investigated in undoped, Mg‐doped, and benzoic acid treated LiNbO3. The different bands are interpreted using an anharmonic oscillator model. Spectroscopic parameters determined from the isotope shift and the overtone frequencies are in good agreement. The anharmonicity found is comparable to that of OH in other ABO3 compounds and in alkali halides.
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