Abstract

New, skutterudite-related compounds IrGe 1.5S 1.5, IrGe 1.5Se 1.5, IrSn 1.5S 1.5, and RhGe 1.5S 1.5 were prepared by direct combination of the elements at 800°C under conditions of ambient pressure, or by heating the partially reacted elements at 40 Kbars pressure and 600°C. The single-phase products were characterized by X-ray analysis, room temperature magnetic susceptibility determinations and four-probe resistivity measurements. Observed weak superstructure reflections in the X-ray spectra suggest an ordering between the group IVa and group VIa atoms.

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