https://doi.org/10.1140/epjp/s13360-024-05303-y
Regular Article
Crystal field effect on intermultiplet transitions in rare-earth paramagnets
IM2NP-CNRS UMR 7334, Aix-Marseille Université, Campus St. Jérôme, Case 142, 13397, Marseille, France
Received:
4
April
2024
Accepted:
21
May
2024
Published online:
2
July
2024
An accurate inter-barycenter distance between two J multiplets can be obtained by deducting the crystal-field correction 
from the intermultiplet transition energy 
, as observed by inelastic neutron scattering. Under favorable circumstances (high symmetry, low temperature, and lack of magnetic order) is easy to evaluate. It proves to be several millielectronvolts in magnitude and always positive in sign. All necessary equations are given for light rare earths (Pr, Nd, Sm) in a cubic or hexagonal crystal field.
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© The Author(s), under exclusive licence to Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature 2024. Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
