RE6Pd13Zn4 (RE = La‐Nd, Sm, Gd, Tb) – New Palladium‐rich Phases with Pd@RE6 Octahedra in bcc Packing1. Issue 14 (12th September 2014) - Gerke, Birgit
Abstract The intermetallic zinc compounds RE6Pd13Zn4 (RE = La – Nd, Sm, Gd, Tb) were synthesized from the elements in sealed niobium ampoules. They crystallize with the cubic Na16Ba6N (Dy6Fe16O) type structure, space group Im $\bar{3}$ m. The samples were investigated by powder X‐ray diffraction and four structures were refined on the basis of single‐crystal X‐ray diffraction data. The striking structural motifs are palladium centered RE6 octahedra in a bcc arrangement. These octahedra are surrounded by a [Pd12Zn4] network. Magnetic susceptibility studies of Gd6Pd13Zn4 show Curie‐Weiss behavior and an experimental magnetic moment of 7.75(2) μB per Gd atom. Gd6Pd13Zn4 orders antiferromagnetically at TN = 10.5(1) K.