F. Bouree et al., CRYSTAL AND MAGNETIC-STRUCTURES OF U2NI2SN INVESTIGATED BY NEUTRON-DIFFRACTION AND SN-119 MOSSBAUER-SPECTROSCOPY, Journal of magnetism and magnetic materials, 138(3), 1994, pp. 307-313
The U2Ni2Sn stannide has been studied by means of neutron powder diffr
action and Mossbauer spectroscopy. This compound crystallizes in the t
etragonal P4/mbm space group in an ordered version of the U3Si2-type s
tructure and orders antiferromagnetically below T-N = 25(1) K. At T =
1.5 K the magnetic structure is collinear with uranium magnetic moment
(1.05(5)mu(B)) perpendicular to the tetragonal c-axis. Sn-119 Mossbau
er spectroscopy at 4.2 K shows that tin atoms see a zero hyperfine fie
ld, in agreement with the proposed antiferromagnetic order.