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Theoretical Calculations on Nonlinear Susceptibilities of Organic Crystals
Published online by Cambridge University Press: 25 February 2011
Abstract
Theoretical calculations on nonlinear susceptibilities of organic crystals are made. Under the oriented gas model approximation, nonlinear susceptibility of a crystal can be calculated both from the molecular hyperpo1arizability and crystal structure data. Molecular hyperpolarizabilities are calculated by an ab initio molecular orbital (MO) method and the energy minimum crystal structures are obtained by an empirical atom-atom pairwise potential method. Finally the effect of intermolecul ar interactions on molecular hyperpolarizabilities, which is neglected in the above approximation, is investigated quantitatively by using a “super molecule” method of ab initio MO calculations.
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- Copyright © Materials Research Society 1990
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