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

doi:10.1039/D0CC07487J

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Complex magnetism in Ni₃TeO₆-type Co₃TeO₆ and high-pressure polymorphs of Mn_3−xCo_xTeO₆ solid solutions†

Elena Solana-Madruga,

*^ab Cintli Aguilar-Maldonado,^a Clemens Ritter,^c Marielle Huvé,^a Olivier Mentré,

^a J. Paul Attfield

^b and Ángel M. Arévalo-López

*^a

Author affiliations

* Corresponding authors

^a Univ. Lille, CNRS, Centrale Lille, ENSCL, Univ. Artois, UMR 8181 – UCCS – Unité de Catalyse et Chimie du Solide, Lille F-59000, France
E-mail: elena.solanamadruga@univ-lille.fr, angel.arevalo-lopez@univ-lille.fr

^b Centre for Science at Extreme Conditions (CSEC) and School of Chemistry, The University of Edinburgh, UK

^c Institut Laue-Langevin, Avenue des Martyrs 71, Grenoble Cedex, France

Abstract

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 (T_N₁ = 58 K) that reorientates (42 K) and further splits (T_N₂ = 23.5 K) creating a coexisting helix. Increasing Co content within the Mn_3−xCo_xTeO₆ 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.

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Article information

DOI: https://doi.org/10.1039/D0CC07487J
Article type: Communication
Submitted: 14 Nov 2020
Accepted: 31 Jan 2021
First published: 01 Feb 2021

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Chem. Commun., 2021,57, 2511-2514

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Complex magnetism in Ni₃TeO₆-type Co₃TeO₆ and high-pressure polymorphs of Mn_3−xCo_xTeO₆ solid solutions

E. Solana-Madruga, C. Aguilar-Maldonado, C. Ritter, M. Huvé, O. Mentré, J. P. Attfield and Á. M. Arévalo-López, Chem. Commun., 2021, 57, 2511 DOI: 10.1039/D0CC07487J

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Chemical Communications