Solana Madruga, ElenaArévalo-López, ÁngelDos Santos García, Antonio JuanUrones, EstebanÁvila Brande, DavidSáez Puche, ReginoAttfield, Paul2024-01-292024-01-292016E. Solana-Madruga, A. M. Arévalo-López, A. J. Dos santos-García, E. Urones, D. Ávila-Brande, R. Sáez-Puche, J. P. Attfield. Double double cation order in the high pressure perovskites MnRMnSbO6. Angew. Chem.: Int. Ed. 2016, 55, 9340-9344. doi: 10.1002/anie.201603526.1433-785110.1002/anie.201603526https://hdl.handle.net/20.500.14352/96245Cation ordering in ABO3 perovskites adds to their chemical variety and can lead to properties such as ferrimagnetism and magnetoresistance in Sr2FeMoO6. Through high-pressure and high-temperature synthesis, a new type of “double double perovskite” structure has been discovered in the family MnRMnSbO6 (R = La, Pr, Nd, Sm). This tetragonal structure has a 1:1 order of cations on both A and B sites, with A-site Mn2+ and R3+ cations ordered in columns and Mn2+ and Sb5+ having rock salt order on the B sites. The MnRMnSbO6 double double perovskites are ferrimagnetic at low temperatures with additional spin-reorientation transitions. The ordering direction of ferrimagnetic Mn spins in MnNdMnSbO6 changes from parallel to [001] below TC = 76 K to perpendicular below the reorientation transition at 42 K at which Nd moments also order. Smaller rare earths lead to conventional monoclinic double perovskites (MnR)MnSbO6 for Eu and Gd.engAttribution-NonCommercial-NoDerivatives 4.0 Internationalhttp://creativecommons.org/licenses/by-nc-nd/4.0/journal article1521-3773https://doi.org/10.1002/anie.201603526restricted access546548High pressureCrystallographyDouble double perovskiteAtomic resolution electron microscopySingle crystalMagnetic propertiesQuímica inorgánica (Química)MaterialesCristalografía (Química)2303.29 Elementos de Transición2303.24 Tierras Raras2211.04 Cristalografía2211.17 Propiedades Magnéticas2213.03 Altas Presiones