Antiferromagnetic order U(1-x)Th(x)Pt(3).
01 January 1986
Neutron diffraction studies show that the phase transition at 6.5K in U(0.95)Th(0.05)Pt(3) is to an antiferromagnetic ground state. The magnetic unit cell is obtained from doubling the nuclear unit cell along one direction in the basal plane. The ordered moment is 0.65 +- 0.1 mu(B)/U-atom, which is well below the moment of 2.6 mu(B)/U-atom extracted from the high- temperature, Curie-Weiss susceptibility of UPt(3).