Magnetic Form Factor of Ni in the Paramagnetic State

A polarized beam measurement of the magnetic form factor of Ni in the paramagnetic region (T∼1.6 Tc) has been performed to detect any possible differences in the spin density distribution from that of the ferromagnetic state. Because of the smallness of the effects, the measurement, carried out in a...

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Bibliographic Details
Published in:Journal of applied physics 1967-03, Vol.38 (3), p.1245-1247
Main Authors: Caglioti, G., Cooper, M. J., Minkiewicz, V. J., Pickart, S. J.
Format: Article
Language:English
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Summary:A polarized beam measurement of the magnetic form factor of Ni in the paramagnetic region (T∼1.6 Tc) has been performed to detect any possible differences in the spin density distribution from that of the ferromagnetic state. Because of the smallness of the effects, the measurement, carried out in an applied field of 13 kOe at 1030°K, was limited to the first five Bragg reflections. After correction for extinction and depolarization, the magnetic amplitudes (other than at the origin) are found to scale reasonably accurately with the room-temperature values, so that we may conclude there is no gross difference in the localized part of the spin density. The value at the origin, derived from the susceptibility, does not scale similarly with the ferromagnetic moment, and this difference is tentatively ascribed to changes in the conduction electron distribution.
ISSN:0021-8979
1089-7550
DOI:10.1063/1.1709562