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

✍ Scribed by J.S. Gardner; C.V. Tomy; L. Afalfiz; G. Balakrishnan; D.Mck. Paul; B.D. Rainford; R. Cywinski; R.S. Eccleston; E.A. Goremychkin

• Publisher: Elsevier Science
• Year: 1995
• Tongue: English
• Weight: 167 KB
• Volume: 213-214
• Category: Article
• ISSN: 0921-4526
• DOI: 10.1016/0921-4526(95)00084-m

✦ Synopsis

The quaternary compound ErNizB2C becomes superconducting with a critical temperature of 9 K. DC magnetisation indicates the presence of magnetic ordering of the Er moments at ~ 7 K. Specific heat measurements show a Schottky anomaly around 45 K with a magnitude of 10 J tool 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.