Interpretation of the crystal field parameters by the superposition and angular overlap models. Application to some lanthanum compounds
- 1 January 1975
- journal article
- Published by EDP Sciences in Journal de Physique
- Vol. 36 (7-8) , 717-725
- https://doi.org/10.1051/jphys:01975003607-8071700
Abstract
The superposition model is applied to the calculation of intrinsic parameters Ā 2(R), Ā4(R) and Ā6( R) for each europium-ligand distance in LaCl3, LaAlO3 , La2O3 and La2O2S. These parameters allow one to draw conclusions regarding the covalency of these compounds and, in some cases, to characterize the europium-ligand bonding. On the other hand, for weakly covalent compounds, the σ* parameters may be determined by the angular overlap modelKeywords
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