J. Phys. I France 1 (1991) 1529-1537
High temperature magnetisation distribution in nickelP. J. Brown1, J. Deportes2 and K. R. A. Ziebeck3
1 Institut Max von Laue-Paul Langevin, 156X, 38042 Grenoble, France
2 Laboratoire Louis Néel, CNRS 166X, 38042 Grenoble, France
3 Physics Department, University of Technology, Loughborough, LE11 3TU, England
(Received 7 May 1990, accepted 10 June 1991)
The distribution of the magnetisation in nickel metal has been studied as a function of temperature in the range 292 to 725 K using polarised neutron scattering complemented by measurements of the bulk magnetisation. The results have been analysed using the model of Mook  in terms of a localised 3d moment with cubic anisotropy superposed on a diffuse magnetisation of reverse polarity. The anisotropy of the form factor seems to show less variation with temperature than that found in previous work. The bulk magnetisation measurements indicate a Curie temperature of 628 K and combined with the observed temperature variation of the 111 magnetic structure factor suggest that the diffuse negative magnetisation disappears at the Curie temperature.
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