Magnetic Phase Transitions of CeSb. II: Effects of Applied Magnetic Fields

G. Meier, P. Fischer, W. Hälg, Bente Lebech, B.D. Rainford, O. Vogt

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    Abstract

    For pt.I see ibid., vol.11, p.345 (1978). The metamagnetic phase transition and the associated phase diagram of the anomalous antiferromagnet CeSb were determined in a neutron diffraction study of the magnetic ordering of CeSb single crystals in applied magnetic fields parallel to the (001) and (011) directions (H<5 T). Because of the anisotropic exchange interactions that favours a (001) easy direction of magnetisation, the magnetic properties are similar to those of the Ising spin systems i.e. antiferromagnetism, ferrimagnetism and ferromagnetism occur at low temperatures and at increasing magnetic fields. The observed magnetic structures do not correspond to the stable configurations expected from the molecular field theory of the face-centred cubic lattice. The change from a first-order transition at the Neel temperature in zero field to second-order transition at high fields points to the existence of a tricritical point, presumably at T approximately 16K and H approximately 0.3 T.
    Original languageEnglish
    JournalJournal of Physics C: Solid State Physics
    Volume11
    Issue number6
    Pages (from-to)1173-1186
    ISSN0022-3719
    DOIs
    Publication statusPublished - 1978

    Cite this

    Meier, G., Fischer, P., Hälg, W., Lebech, B., Rainford, B. D., & Vogt, O. (1978). Magnetic Phase Transitions of CeSb. II: Effects of Applied Magnetic Fields. Journal of Physics C: Solid State Physics, 11(6), 1173-1186. https://doi.org/10.1088/0022-3719/11/6/023