Magnetic structures under pressure in cubic heavy-fermion compounds
Abstract
Neutron diffraction experiments under pressure on the cubic heavy-fermion compounds CeIn3 and CePb3 are reported. Resistivity measurements were performed on CeIn3 in order to study the approach to the magnetic-nonmagnetic transition. Comparisons are made with previous results obtained on CeAl2. In CePb3 and CeAl2, the pressure-induced change in the magnetic structure from modulated to simple-antiferromagnetic may correspond to a reduction of the magnetic anisotropy. The strong pressure decrease of the Néel temperature of CeIn3 for P>15 kbar indicates the proximity of the transition from a magnetic to a nonmagnetic ground state. In cubic heavy-fermion compounds, the appearance of a nonmagnetic ground state seems to be directly connected to the recovery of the full multiplet degeneracy of the rare-earth ion.
- Publication:
-
Journal of Low Temperature Physics
- Pub Date:
- February 1988
- DOI:
- 10.1007/BF00682787
- Bibcode:
- 1988JLTP...70..377M
- Keywords:
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- Anisotropy;
- Magnetic Material;
- Resistivity Measurement;
- Neutron Diffraction;
- Magnetic Structure