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Abstract

A magnetization density study by polorized-neutron scattering on the intermetallic compound U(2)Co(2)Sn is reported. U(2)Co(2)Sn belongs to large An(2)T(2)X (An=U,Np, Pu,Am, T=transition metal, X=In, Sn) family of compounds crystallizing in an ordered variant of the tetragonal U(3)Si(2) type of structure (space group P4/mbm).U(2)Co(2)Sn does not order magnetically but has a large magnetic susceptibility that qualifies it as an enhanced paramagnet or spin fluctuator. We report single-crystal magnetization measurements that show an important magnetic anisotropy, with a c-axis susceptibility exceeding that measured on the basal plane by a factor of four. The magnetization density distribution in the unit cell was measured at 2 K by polarized neutron scattering under a magnetic field of 5.5 T applied parallel to the c-axis. It was found that the major contribution to the magnetic susceptibility is located on the U atoms (u=118(3)mB) but a small response from the Co atoms is also measured (Co = 13(2)mB).

Additional information

Authors: PAIXAO J A, University of Coimbra, Coimbra (PT);ALMEIDA M, University of Coimbra, Coimbra (PT);PEREIRA L C J, Instituto Tecnologico e Nuclear, Sacavem (PT);ESTRELA P, University of Lisbon, Lisbon (PT);GODINHO M, University of Lisbon, Lisbon (PT);PAOLASINI L, CE Saclay (FR);BONNET M, SPSMS Grenoble (FR);REBIZANT J, Institute for Transuranium Elements, Karlsruhe (DE);SPIRLET J C, Institute for Transuranium Elements, Karlsruhe (DE)
Bibliographic Reference: Article: Journal of Physics Condensed Matter, 1998
Record Number: 199910457 / Last updated on: 1999-03-19
Category: PUBLICATION
Original language: en
Available languages: en