Yb_2+3‐xPd_12‐3+xP₇ (x = 0.40): Different Ytterbium Species in a Substituted Structural Motif of the Zr₂Fe₁₂P₇ Type.

Abstract

Structure Structure D 2000Yb 2+3-x Pd 12-3+x P 7 (x = 0.40): Different Ytterbium Species in a Substituted Structural Motif of the Zr2Fe12P7 Type. -Single crystals of Yb4.6Pd9.4P7 are obtained from the reaction of the elements at 1100°C (40 h) and subsequent annealing at 800°C (10 d). The compound crystallizes in space group P6 with Z = 1. The atomic arrangement reproduces a structural motif of the hexagonal Zr2Fe12P7 type in which one of the transition metal positions is substituted predominantly by Yb. The ytterbium atoms are embedded in the three-dimensional polyanion formed by Pd and P atoms. Two different environments for Yb are present in the structure. Magnetic susceptibility measurements and XAS spectroscopy at the Yb LIII edge show the presence of Yb in two electronic configurations, 4f 13 and 4f 14 . -(BUDNYK, S.; PROTS, Y.; SCHMIDT, M.; SCHNELLE, W.; KUZ'MA, Y.; GRIN*, Y.