Transparent Alumina: A Light-Scattering Model

A model based on Rayleigh–Gans–Debye light‐scattering theory has been developed to describe the light transmission properties of fine‐grained, fully dense, polycrystalline ceramics consisting of birefringent crystals. This model extends light transmission models based on geometrical optics, which ar...

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Bibliographic Details
Published in:Journal of the American Ceramic Society 2003-03, Vol.86 (3), p.480-486
Main Authors: Apetz, Rolf, van Bruggen, Michel P. B.
Format: Article
Language:English
Subjects:
alumina
Brillouin and rayleigh scattering
other light scattering
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Exact sciences and technology
modeling/model
optical materials/properties
Optical properties and condensed-matter spectroscopy and other interactions of matter with particles and radiation
Physics
polycrystalline materials
scattering
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Summary:A model based on Rayleigh–Gans–Debye light‐scattering theory has been developed to describe the light transmission properties of fine‐grained, fully dense, polycrystalline ceramics consisting of birefringent crystals. This model extends light transmission models based on geometrical optics, which are valid only for coarse‐grained microstructures, to smaller crystal sizes. We verify our model by measuring the light transmission properties of fully dense (>99.99%), polycrystalline α‐Al2O3 (PCA) with mean crystal sizes ranging from 60 to 0.3 μm. The remarkable transparency exhibited by PCA samples with small crystal sizes (
ISSN:0002-7820
1551-2916
DOI:10.1111/j.1151-2916.2003.tb03325.x