ChemInform Abstract: Crystal and Magnetic Structure of Sr2MIrO6(M: Ca, Mg) Double Perovskites - A Neutron Diffraction Study

Polycrystalline Sr2CaIrO6 (I) and Sr2MgIrO6 (II) are prepared from citrate-nitrate precursors using Sr(NO3)2, IrO2, CaCO3, or MgO in aqueous citric acid and HNO3 evaporated at 140 °C and heated to 600 °C to decompose organic residues and NO3 (950 °C, 12 h, O2 pressure of 200 bar (I), 800 °C, 36 h for (II)).