High temperature magnetisation distribution in nickel

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Abstract
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 [1] 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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