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Specular Infrared Reflectance Study of Hot Pressed Rare Earth Sesquisulfide Powders

Published online by Cambridge University Press:  21 February 2011

Cheryl M. Vaughan  and
William B. White
Cheryl M. Vaughan
Affiliation:
Materials Research Lab, The Pennsylvania State University, University Park, PA 16802
William B. White
Affiliation:
Materials Research Lab, The Pennsylvania State University, University Park, PA 16802
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Extract

Specular infrared reflectance spectra were made on hot pressed powder samples of rare earth sulfides of composition Ln2S3. The reflectance curve obtained from the Kramers-Kronig analysis is the deconvolution of the sum of the reflectance curves from the multiple grains, giving the bulk dielectric constant within the 25 cm−1 to 400 cm−1 range and transverse and longitudinal optic modes for the bulk material. Reflectance spectroscopy has shown to be a very good alternative to infrared transmission spectra in the far infrared range to obtain electro-optical information on ceramic powders.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 152: Symposium H – Optical Materials: Processing and Science , 1989 , 288
Copyright
Copyright © Materials Research Society 1989

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