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00925njm 22002777a 4500 dc Solana Madruga, Elena author Aguilar Maldonado, Cintli author Arévalo López, Ángel M. author Attfield, J. Paul author Mentré, Olivier author Ritter, Clemens author 2021 The first triple perovskite with Mn in A- and 1 : 2 B-site order Mn3MnNb2O9, prepared using high pressure phase transformation of the magnetodielectric Mn4Nb2O9, is reported herein. It has a complex magnetic behaviour with a transition from a collinear AFM into an evolving incommensurate spin density wave (SDW) further stabilised into a lock-in structure dictated by the B-site order. 14. E. Solana-Madruga, C. Ritter, C. Aguilar-Maldonado, O. Mentré, J. P. Attfield, A. M. Arévalo-López. Mn3MnNb2O9: high-pressure triple perovskite with 1 : 2 B-site order and modulated spins. Chem. Commun. 2021, 57, 8441-8444. doi: 10.1039/d1cc02782d 10.1039/d1cc02782d https://hdl.handle.net/20.500.14352/137076 https://doi.org/10.1039/D1CC02782D https://pubs.rsc.org/en/content/articlelanding/2021/cc/d1cc02782d Mn3MnNb2O9: high-pressure triple perovskite with 1 : 2 B-site order and modulated spins