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Magnetic structures under pressure in cubic heavy-fermion compounds

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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.

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Author notes

  1. M. Konczykowski

    Present address: SESI, CEN, Fontenay-aux Roses, France

Authors and Affiliations

  1. Laboratoire Louis Néel, CNRS, Grenoble, France

    P. Morin

  2. Institut Laue-Langevin, Grenoble, France

    C. Vettier

  3. Centre de Recherches sur les Très Basses Températures, CNRS, Grenoble, France

    J. Flouquet, M. Konczykowski, Y. Lassailly & J. -M. Mignot

  4. Max Planck Institut für Festkörperforschung, Grenoble, France

    U. Welp

Authors
  1. P. Morin
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  2. C. Vettier
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  3. J. Flouquet
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  4. M. Konczykowski
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  5. Y. Lassailly
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  6. J. -M. Mignot
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  7. U. Welp
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Laboratory associated with the Université Scientifique, Technologique et Médicale de Grenoble.

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Morin, P., Vettier, C., Flouquet, J. et al. Magnetic structures under pressure in cubic heavy-fermion compounds. J Low Temp Phys 70, 377–391 (1988). https://doi.org/10.1007/BF00682787

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