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Proceedings Paper

Optical absorption of Eu3+ and Eu2+ in europium oxides and europium fluorides
Author(s): Victor F. Zinchenko; Ninel' P. Efryushina; O. G. Eryomin
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Paper Abstract

Optical absorption of Eu3+ and Eu2+ ions in the polycrystalline europium oxides and fluorides was studied by the diffuse reflectance spectroscopy method. For all europium compounds, characteristic narrow peaks of 4f-4f electron transitions are observe. Their positions are rather independent upon the type of a compound. However, their intensity and number significantly vary, especially from the transition oxides to fluorides. In addition to those, shoulders of fundamental absorption in the oxide Rd- spectra of the oxide materials arise. Substitution of Eu2+ ions for Eu3+ ions in the EuF3 - lattice causes a sharp change of the spectral characteristics. It is accompanied by an appearance of the wide band due to 4f-5d-electron transitions.

Paper Details

Date Published: 12 July 2002
PDF: 4 pages
Proc. SPIE 4766, XI Feofilov Symposium on Spectroscopy of Crystals Activated by Rare-Earth and Transition Metal Ions, (12 July 2002); doi: 10.1117/12.475346
Show Author Affiliations
Victor F. Zinchenko, A.V. Bogatsky Physico-Chemical Institute (Ukraine)
Ninel' P. Efryushina, A.V. Bogatsky Physico-Chemical Institute (Ukraine)
O. G. Eryomin, A.V. Bogatsky Physico-Chemical Institute (Ukraine)


Published in SPIE Proceedings Vol. 4766:
XI Feofilov Symposium on Spectroscopy of Crystals Activated by Rare-Earth and Transition Metal Ions

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