Crystal structure of Mn2Ln3Sb3O14 (Ln=La, Pr and Nd): A new ordered rhombohedral pyrochlore

Crystal structure of rhombohedral pyrochlore Mn2Ln3Sb3O14 (Ln=La, Pr, and Nd) showing the staking of Ln3Mn and MnSb3 layers (a). (b) and (c) show the connections between Mn1O6 and LnO8 and between Mn2O8 and SbO6 polyhedra, respectively.