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Title: Crystal field analysis of EuCl3.H2O
Authors: Binnemans, Koen ×
Görller-Walrand, Christiane #
Issue Date: 1996
Conference: 21st Rare Earth Research Conference location:Duluth (Minnesota, USA) date:7-12 July 1996
Abstract: Absorption and magnetic circular dichroism (MCD) spectra of polycrystalline EuCl3.6H2O samples were recorded between 16000 and 36000 cm-1 at ambient temperature and at 77 K. A total of 104 crystal field transitions is observed in the spectra. The MCD spectrum resembles the first derivative of the absorption spectrum, indicating the presence of (pseudo) A-terms. The advantage of MCD is the possibility of detecting quasi-degenerate crystal field levels, which are not resolved in the absorption spectrum. The coordination polyhedron around Eu3+ is a distorted square antiprism ( C.N. = 8 ). The real C2 symmetry of the europium site is approximated by a C2v symmetry in order to make crystal field calculations more tractable. The energy levels of the 4f6 configuration of Eu3+ are parametrized in terms of 20 free ion parameters and 9 Bkq crystal field parameters. J-mixing is taken into account.
Description: poster presented by Koen Binnemans
Publication status: published
KU Leuven publication type: IMa
Appears in Collections:Molecular Design and Synthesis
Chemistry - miscellaneous
× corresponding author
# (joint) last author

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