Crystal and magnetic structures of the high pressure Mn2MSbO6 (M = Mn and Co) oxides.
High pressure Mn2BB’O6 materials are of fundamental interest due to the combination of spin, orbital and charge degrees of freedom assigned to Mn. They crystallise in the double-perovskite or corundum-related structures. Cation-ordered structures based on the corundum type have been of great interest for multiferroic properties as the LiNbO3–type (LN, space group R3c) and the double corundum Ni3TeO6 (NTO, R3) and ordered ilmenite11 (OIL, R3) types are all polar permitting ferroelectricity. Geometrically frustrated honeycomb layers occupied by transition metal cations can lead to helical spin structures, which may give rise to magnetically induced ferroelectricity in these Mn2BB’O6 oxides. We have prepared Mn2MSbO6 (M = Mn and Co) with a corundum-related super-structure by high pressure and temperature. They present ferrimagnetic transitions at low temperature and a complex cation ordering.
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AREVALO LOPEZ Angel; J. Paul Attfiel;d; DOS SANTOS GARCIA Antonio Juan; RITTER Clemens; SAEZ PUCHE Regino and Elena Solana-Madruga. (2019). Crystal and magnetic structures of the high pressure Mn2MSbO6 (M = Mn and Co) oxides.. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.5-31-2624
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