Structural and Electronic Properties of the Mixed Co/Ru Perovskites AA′CoRuO6 (A, A′ = Sr, Ba, La)

作者： S.H. Kim , P.D. Battle

DOI: 10.1006/JSSC.1995.1025

关键词: Crystal structure 、 Bond length 、 Magnetic susceptibility 、 Perovskite (structure) 、 Powder diffraction 、 Crystallography 、 Molecular geometry 、 Inorganic chemistry 、 Frustration 、 Chemistry 、 Octahedron 、 Physical and Theoretical Chemistry 、 Materials Chemistry 、 Electronic, Optical and Magnetic Materials 、 Condensed matter physics 、 Ceramics and Composites

摘要: Abstract The compounds Sr2CoRuO6, SrLaCoRuO6, Ba2CoRuO6, and BaLaCoRuO6 have been prepared characterized by X ray powder diffraction SQUID magnetometry. All but Ba2CoRuO6 crystallize as pseudo-cubic perovskites with a disordered arrangement of Co Ru cations over the six-coordinate sites. adopts hexagonal 6H perovskite structure in vertex-sharing octahedra random M2O9 dimers. Frustration is apparent magnetic properties each these at low temperatures, contrast to Ba3CoRu2O9, which shows no structural disorder orders antiferromagnetically 106 K.