Abstract
A magnetic structure of SmFe2 with a Laves phase crystalline structure wasinvestigated by means of white-x-ray magnetic diffraction. The orbital and thespin magnetic form factors of Sm and Fe ions have been obtained as a function ofmomentum transfer. Their extrapolation to zero momentum transfer, according tothe dipole approximation based on an atomic model, has given the values of thespin and the orbital magnetic moments of Sm ions as −2.54 +/- 0.55μB and 2.79 +/- 0.61μB,respectively. This result confirms that the small magnetic momentof Sm ions arises from antiparallel coupling between the spin andthe orbital magnetic moments. The spin and the orbital magneticmoments of Fe ions have been also estimated, as 1.13 +/- 0.25μB and 0.19 +/- 0.04μB,respectively.
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