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A combined neutron and Mössbauer study of the magnetization density distribution in UFe(10)Si(2) is reported. Polarized neutron-scattering measurements show that the magnetization aligned parallel to an applied field of 2T is mostly due to the Fe atoms. The values of the magnetic moment at the three crystallographic sites occupied by the transition metal atom are 1.67(3) u(Beta) (8f), 2.30(3) u(Beta) (8I) and 1.73(4) u(Beta) (8j). A small magnetic moment (approximately 0.3 u(Beta)) is measured at the U site, aligned ferromagnetically with the Fe moments. Such a small value appears to be due to a partial cancellation of the individual orbital and spin magnetic moment contributions of the actinide atom. The values of the (57)Fe hyperfine magnetic field at the three crystallographic sites occupied by the Fe atoms change in the same order as the magnetic moments determined by neutron scattering, although the Beta(hf)/u(Fe) ratio is not constant.

Additional information

Authors: PAIXÃO J A, Departamento de Fisica, Universidade de Coimbra (PT);WAERENBORGH J C ET AL, Departamento de Quimica, Instituto de Tecnologia Nuclear, Sacavém (PT);ROGALSKI M S ET AL, IFIMUP, Faculta de Ciências da Universidade do Porto (PT);SPIRLET J C, JRC Karlsruhe (DE);BONNET M, Département de Recherche Fondamentale sur la Matière Condensée, SPSMS, Grenoble (FR)
Bibliographic Reference: Article: Journal of Physics of Condensed Matter (1997)
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