GENERALIZED THEORY OF AVERAGE DIELECTRIC-CONSTANT AND ITS APPLICATION TO INFRARED-ABSORPTION BY ZNO SMALL PARTICLES

Theory of average dielectric constant developed by Genzel and Martin is generalized to the case of randomly oriented ellipsoidal particles having anisotropic dielectric constants. Effects which result from the mixture of different types of particles are also incorporated in the theory. The generalized theory is applied to the calculation of infrared absorption spectra of ZnO small particles. The present calculation can reproduce fairly well the experimental spectra of ZnO smoke reported by Yamamoto et al. © 1979, THE PHYSICAL SOCIETY OF JAPAN. All rights reserved.