Analysing cation-modified magnetic perovskites A2SnFeO6 (A = Ca, Ba): a DFT study
Double perovskite compounds crystallize in a cubic geometry. The larger cation A (Ca, Ba) with 12-fold coordination resides at the centre. The B (Sr) and B′ (Fe) atoms are inside octahedral cages surrounded by the neighbouring X (O) atoms at corner positions.