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Determination of Optical Constants of Ceria By Combined Analytical and Experimental Approaches

Ganesan, Krithiga and Dombrovsky, Leonid A. and Oh, Tae-Sik and Lipiński, Wojciech (2013) Determination of Optical Constants of Ceria By Combined Analytical and Experimental Approaches. JOM - Journal of the Minerals, Metals and Materials Society, 65 (12). pp. 1694-1701. ISSN 1047-4838. doi:10.1007/s11837-013-0708-y.

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Optical constants of ceria are determined in the visible and near-infrared spectral ranges. Two techniques are employed to obtain the index of refraction. The first technique is a direct procedure which involves analysis of wave interference in the transmission spectrum of a ceria thin film. The second technique is an indirect procedure that involves analysis of transmission and reflection spectrum of ceria with sintered morphology. The index of absorption is obtained in the spectral range of weak absorption using the indirect procedure. The identified index of absorption is in turn used in an alternative approach based on the subtractive Kramers–Krönig relation to estimate the spectral dependence of the index of refraction. The index of refraction identified from the measured transmittance of the thin film is qualitatively consistent with that found in the literature. The subtractive Kramers–Krönig analysis indicates that the spectral dependence of the index of refraction in the transparency range is highly sensitive to the absorption spectrum in the neighboring spectral range of strong absorption, and it is insensitive to the absorption spectrum in the spectral range of weak absorption.

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Additional Information:© TMS 2013. The financial support by the Initiative for Renewable Energy and the Environment (grant no. RL-0003-2011) and the National Science Foundation (Grant No. EFRI-1038307) is gratefully acknowledged. Leonid Dombrovsky is grateful for the financial support from the University of Minnesota and the Russian Foundation for Basic Research (Grant No. 13-08-00022-a). Dr. WooChul Jung’s contribution to PLD film fabrication is much appreciated. SEM characterization was carried out in the Characterization Facility, University of Minnesota, which receives partial support from NSF through the MRSEC program. The authors would like to thank Prof. Sossina Haile and Dr. William Chueh for the fabrication of the porous ceria samples.
Funding AgencyGrant Number
Initiative for Renewable Energy and the EnvironmentRL-0003-2011
Russian Foundation for Basic Research13-08-00022-a
University of MinnesotaUNSPECIFIED
Issue or Number:12
Record Number:CaltechAUTHORS:20170705-110127258
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Official Citation:Ganesan, K., Dombrovsky, L.A., Oh, TS. et al. JOM (2013) 65: 1694. doi:10.1007/s11837-013-0708-y
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:78763
Deposited By: Ruth Sustaita
Deposited On:06 Jul 2017 22:57
Last Modified:15 Nov 2021 17:42

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