Electronic, magnetic and optical properties of double perovskite Sr2CuIrO6Dafang He, Xue Du, Yuqing Liu, Huayue Mei, Hongkuan Yuan and Nanpu ChengEur. Phys. J. Plus, 136 1 (2021) 82DOI: https://doi.org/10.1140/epjp/s13360-020-01054-8