Synthesis, structure and physical properties of LnNi(Sn,Sb)3 (Ln=Pr, Nd, Sm, Gd, Tb)

Dixie P. Gautreaux, Louisiana State University
Cigdem Capan, Louisiana State University
John F. DiTusa, Louisiana State University
David P. Young, Louisiana State University
Julia Y. Chan, Louisiana State University


Five new analogues of the β-CeNiSb3 family have been synthesized and found to be LnNi(Sn,Sb)3 and isostructural to the previously reported β-CeNiSb3. LnNi(Sn,Sb)3 (Ln=Pr, Nd, Sm, Gd, or Tb) crystallizes in the orthorhombic space group, Pbcm, with lattice parameters of a∼12.9 Å, b∼6.1 Å, c∼12.0 Å. The structure consists of layers of nearly square nets of X (X=Sn/Sb) atoms and highly distorted NiX6 octahedra. Lanthanide atoms are located between layers of X and NiX6 octahedra. All analogues are metallic and experimental effective magnetic moments are in agreement with the respective Ln3+ calculated moments. © 2008 Elsevier Inc. All rights reserved.