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Journal article

Magnetic Phase Transitions of CeSb. I: Zero Applied Magnetic Field

From

Risø National Laboratory for Sustainable Energy, Technical University of Denmark1

Nano-Microstructures in Materials, Materials Research Division, Risø National Laboratory for Sustainable Energy, Technical University of Denmark2

Materials Research Division, Risø National Laboratory for Sustainable Energy, Technical University of Denmark3

The magnetic ordering of the anomalous antiferromagnet CeSb, which has a NaCl crystal structure, was determined in zero applied magnetic field by means of neutron diffraction investigations of single crystals and powder. Below the Neel temperature TN of (16.1+or-0.1)K, there exist six partially disordered magnetic phases of antiphase domain type ((100) superstructures) with (100) orientation of the magnetic moments.

At 4.4K, the ordered magnetic moment equals (2.10+or-0.04) mu B, which corresponds to the free-ion value of 2.14 mu mB for Ce3+. The temperature dependence of the ordered moment shows a first-order phase transition at TN. At approximately TN/2 there is a first-order phase transition to a FCC type IA low-temperature configuration.

The unusual magnetic properties of CeSb, which result from anisotropic exchange and crystalline electric field effects, resemble those of certain actinide NaCl-type compounds.

Language: English
Year: 1978
Pages: 345-364
ISSN: 17473802 and 00223719
Types: Journal article
DOI: 10.1088/0022-3719/11/2/018

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