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Antiferroquadrupolar Order in the Magnetic Semiconductor TmTe

J. M. Mignot·A. Gukasov·C. P. Yang·P. Link·T. Matsumura·T. Suzuki
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Abstract

The physical properties of the antiferroquadrupolar state occurring in TmTe below TQ=1.8 K have been studied using neutron diffraction in applied magnetic fields. A field-induced antiferromagnetic component k = (1/2,1/2,1/2) is observed and, from its magnitude and direction for different orientations of H, an O(2,2) quadrupole order parameter is inferred. Measurements below TN ~= 0.5 K reveal that the magnetic structure is canted, in agreement with theoretical predictions for in-plane antiferromagnetism. Complex domain repopulation effects occur when the field is increased in the ordered phases, with discontinuities in the superstructure peak intensities above 4 T.

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J. M. Mignot, A. Gukasov, C. P. Yang, P. Link, T. Matsumura, T. Suzuki. 2001-12-07. Antiferroquadrupolar Order in the Magnetic Semiconductor TmTe. https://doi.org/10.1143/jpsjs.71s.39

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