Effects of iron substitution and anti-site disorder on crystal structures, vibrational, optical and magnetic properties of double perovskites Sr2(Fe1−xNix)TeO6
monoclinic space group I 2/ m . The double-perovskite structures ideally contain two alternating types of octahedra (Fe/Ni) 2 d O 6 and (Te) 2 a O 6 , tilted in the system (a − a − c 0 ). However, the refinements [...] Asmaa Zaraq, Duncan H. Gregory, Brahim Orayech, Josu M. Igartua, Abdeslam El Bouari, James D. Eales, Paul A. Bingham and Thorsten M. Gesing Dalton Transactions (2022) https://doi.org/10.1039/D2DT02447K [...] containing B site transition elements of different charge and size. Temperature-dependent magnetic susceptibility data show magnetic transitions below 40(1) K (38(1) K, 31(1) K, 25(1) K, 20(1) K, and 35(1)