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The effect of magnetic ordering on the crystal field levels of ErNi2B2C

Authors
Journal
Physica B Condensed Matter
0921-4526
Publisher
Elsevier
Publication Date
Identifiers
DOI: 10.1016/0921-4526(95)00084-m
Disciplines
  • Physics

Abstract

Abstract The quaternary compound ErNi 2B 2C becomes superconducting with a critical temperature of 9 K. DC magnetisation indicates the presence of magnetic ordering of the Er moments at ≈ K. Specific heat measurements show a Schottky anomaly around 45 K with a magnitude of 10 J mol K −1 which agrees well with our model for the crystal-field scheme and neutron scattering data. We observed changes in the widths and positions of peaks in the crystal-field spectra, indicating the build up of magnetic interactions with the f electrons and thus contributing to the crystal-field Hamiltonian.

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