Spectroscopic Study of Rare Earth Chromates: Relation to the Structure |
| E. Antic-Fidancev, M. Lemaitre-Blaise Laboratoire de Chimie Métallurgique et Spectroscopie des Terres Rares, CNRS-UPR209 1, Place A. Briand, 92195 Meudon, France and C. Parada Dpto de Quimica Inorganica, Faculdad de Quimicas, Universidad Complutense, 28040 Madrid, Spain |
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| The luminescence spectra of the trivalent europium ion embedded in various rare earth chromates were analyzed. The spectroscopic data in most of chromates are in agreement with the structural determination but for some others the discrepancy between two methods is underlined. Energy level schemes were deduced from the experimental emission spectra and the crystal field simulation has been performed. The maximum splitting of the 7F1 manifold of the Eu3+ ion as a function of Nv, the so-called crystal field strength parameter, is given. This allows us to classify the compounds according to their crystal field extent. |
| DOI: 10.12693/APhysPolA.90.33 PACS numbers: 33.50.Dq, 33.50.Hv, 71.70.Ch, 78.50.Ec |