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Optical Properties of CeO 2 Crystal in the Photon Energy Range of 2.5–40 eV

1988; Physical Society of Japan; Volume: 57; Issue: 4 Linguagem: Inglês

10.1143/jpsj.57.1489

1347-4073

Michio Niwano, Shigeru Sato, T. Koide, T. Shidara, A. Fujimori, Hirohito Fukutani, Shik Shin, Mareo Ishigame,

Crystal Structures and Properties

Optical reflectance spectra of CeO 2 crystal have been measured in the photon energy range from 2.5 to 40 eV. A Kramers-Kronig analysis of the reflectance data has been performed to obtain the dielectric function and related functions. The observed spectral features can be explained in terms of the charge transfer and interband transitions and the atomic-like excitation of the Ce 5 p core electron. A peak regarded as a candidate for the "4 f 2 " feature has been observed at an excitation energy of 13 eV.