Complex magnetism in Ni3TeO6-type Co3TeO6 and high-pressure polymorphs of Mn3-xCoxTeO6 solid solutions

Elena Solana-madruga, Cintli Aguilar-maldonado, Clemens Ritter, Marielle Huvé, Olivier Mentré, J. Paul Attfield, Ángel M. Arévalo-lópez

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New Ni3TeO6-type (NTO) and double perovskite (DPv) polymorphs of Co3TeO6 are synthesised at pressures of 15 GPa. A complex elliptic helical magnetic order is observed in the NTO polymorph (TN1 = 58 K) that reorientates (42 K) and further splits (TN2 = 23.5 K) creating a coexisting helix. Increasing Co content within the Mn3−xCoxTeO6 system changes the dominant DPv phase to NTO structural type and drastically modifies the magnetic behaviour. DPv Co3TeO6 is the first A-site double cobaltite.
Original languageEnglish
JournalChemical Communications
Early online date1 Feb 2021
Publication statusE-pub ahead of print - 1 Feb 2021


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