Refractive index database

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Optical constants of Ce (Cerium)
Fernández-Perea et al. 2008: n,k 0.00103–0.207 µm

Wavelength: µm

Complex refractive index (n+ik)[ i ]

n   k   LogX   LogY   eV

Derived optical constants

Conditions & Spec sheet

n_is_absolute: true
wavelength_is_vacuum: true


Density: 6.771 g/cm3. Film deposited at room temperature.


M. Fernández-Perea, J. A. Aznárez, J. I. Larruquert, J. A. Méndez, L. Poletto, D. Garoli, A. M. Malvezzi, A. Giglia and S.Nannarone. Transmittance and optical constants of Ce films in the 6-1200eV spectral range , J. Appl. Phys. 103, 073501 (2008) (Numerical data kindly provided by Juan Larruquert)


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Cerium, Ce

Cerium (Ce) is a soft, ductile, and silvery-white metal that is the most abundant of the rare-earth elements. It typically exists in two oxidation states: Ce3+ and Ce4+, making it a powerful reducing agent and an interesting component in various optical, catalytic, and electronic applications. In particular, cerium oxide (CeO2) finds use in catalytic converters, solid oxide fuel cells, and chemical mechanical planarization processes due to its ability to switch between the two oxidation states. Cerium-doped materials are also of considerable interest in the fields of luminescence and scintillation, where they serve as dopants in phosphors and scintillator crystals. Methods for obtaining high-purity cerium include solvent extraction and ion-exchange techniques. While cerium is not as toxic as other heavy metals, proper handling and disposal methods are still advised. Ongoing research aims to exploit cerium's unique redox behavior and electron structure for new applications in environmental remediation, energy storage, and advanced manufacturing.

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