Abstract
The crystal structure of the ternary intermetallic compound Yb 3Pd 2Sn 2 has been determined ab initio from powder X-ray diffraction data. The compound crystallizes as a new structure type in the orthorhombic space group Pbcm and lattice constants a=0.58262(3), b=1.68393(8), c=1.38735(7) nm. Yb 3Pd 2Sn 2 is composed of a complex ∞[Pd 2Sn 2] δ− polyanionic network in which the Yb ions are embedded. A comparison between this structure and those of Eu 3Pd 2Sn 2 and Ca 3Pd 2Sn 2, other novel polar intermetallic compounds, was made. DC susceptibility and 170Yb Mössbauer spectroscopic measurements indicate a close-to divalent Yb behavior. Moreover, a hybridization between 4 f and conduction electrons is suggested by electronic structure calculations and heat capacity measurements.
Published Version
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