A solid-state ${}^{171}$Yb NMR-spectroscopic characterization of selected divalent ytterbium intermetallics

The intermetallic ytterbium compounds YbZnSn, YbPdSn${}_2$, YbAuIn${}_2$ and their calcium-substituted counterparts Yb${}_{0.5}$Ca${}_{0.5}$ZnSn, Yb${}_{0.5}$Ca${}_{0.5}$PdSn${}_2$ and Yb${}_{0.5}$Ca${}_{0.5}$AuIn${}_2$ were synthesized by reaction of the elements in sealed tantalum tubes in an induction furnace. The samples were characterized by X-ray powder diffraction. Their static, temperature-dependent solid-state ${}^{171}$Yb NMR spectra exhibit strong positive Knight shifts without any significant temperature dependence. The resonance shifts including anisotropy parameters for the ternary compounds have been determined.