Evolution of magnetic structures in U(Ni1-xPdx)2Si2 system

Influence of Pd-Ni substitution on the formation of magnetic phases in the tetragonal U(Ni1-xPdx)2Si2 system and the corresponding magnetic phase diagrams are presented. The single crystals of two different substitutions x=0.15 and 0.10 were grown and detailed studies by neutron diffraction were performed in horizontal magnetic fields up to B=6 T. Both compounds order antiferromagnetically (AF) and exhibit three different AF structures below the Neel temperature. All three structures are formed by ferromagnetic basal planes stacked along c-axis with different q=(0,0,qz) propagation. For x=0.10, the co-existence of two magnetic phases in the ground-state was observed