Calcium substitution in rare-earth metal germanides with the hexagonal Mn5Si3 structure type. structural characterization of the extended series RE5-xCaxGe3 (RE=Rare-earth metal)

The family of rare-earth metal-calcium-germanides with the general formula RE5-xCaxGe3 (RE=Y, Ce-Nd, Sm, Gd-Tm and Lu) crystallize in the hexagonal space group P63/mcm (No. 193, Pearson symbol hP16) with a structure that is a variant of the Mn5Si3 structure type.