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Disappearance of three-dimensional magnetic ordering in Gd2CuO4 : 38th Annual Conference on Magnetism and Magnetic Materials (1994)

Chattopadhyay, T. ; Brown, P. J. ; Roessli, B.

[S.l.] : American Institute of Physics (AIP)

Journal of Applied Physics 75 (1994), S. 6816-6818

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ISSN: 1089-7550

Source: AIP Digital Archive

Topics: Physics

Notes: The magnetic ordering of an isotope (158Gd) enriched Gd2CuO4 single crystal has been investigated by neutron diffraction in the temperature range 1.5–50 K. The three-dimensional magnetic order of the Cu sublattice is found to disappear abruptly in a narrow temperature range close to 7 K which is just above the ordering temperature of the Gd sublattice [TN(Gd)=6.4 K]. This result is thought to be intimately related to the structural distortion of the CuO planes which gives rise to weak ferromagnetism. The lack of three-dimensional order in the structural distortion imposes itself on the antiferromagnetic arrangement of the Cu sublattice through the Cu-Gd and Gd-Gd interactions and the different and incompatible wave vectors of the Cu and Gd magnetic sublattices.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1063/1.356817

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