Infrared Absorption Spectrum of Ionic Powders

  • J. M. Gerardy
  • M. Ausloos


The infrared absorption spectrum of powders has already been discussed elsewhere, and examined along different lines of approximation. We have solved exactly Maxwell’s equations for an arbitrary distribution of spherules to all 2t polar orders. We present here the dipolar and quadrupolar effects on the infrared absorption spectrum of ionic (NiO) simple systems, in the long wavelength limit approximation, when the spherule dielectric constant has a simple theoretical form. Square and tetrahedron clusters are used for illustration.


Quadrupolar Interaction Incident Field Infrared Absorption Spectrum Compact Cluster Dielectric Matrix 
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Copyright information

© Springer Science+Business Media New York 1981

Authors and Affiliations

  • J. M. Gerardy
    • 1
  • M. Ausloos
    • 1
  1. 1.Institut de Physique, B5Université de LiègeSart-Tilman/Liège 1Belgium

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