MOLECULAR MODEL FOR LOCALISED MODES IN CUBIC CRYSTALS

T M HARIDASAN, N KRISHNAMURTHY

Abstract


The molecular moidel of Jaswal' has been extended to take into account the second nerghbout interactions. The frequcneies of the localised modes due to U.centres in .alkali halides and subsetutional impurities in III.V semconductors have been computed and discursed In reiation to their infrared absorption spectra.

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