• YCa3(CrO)3(BO3)4: a Cr3+ kagomé lattice compound showing no magnetic order down to 2 K 

      Wang, Chun-Hai; Avdeev, Maxim; Kennedy, Brendan J; Kuepers, M; Ling, Chris D
      Published 2016
      We report a new gaudefroyite-type compound YCa3(CrO)3(BO3)4, in which Cr3+ ions (3d3, S = 3/2) form an undistorted kagomé lattice. Using a flux agent, the synthesis was significantly accelerated with the typical calcining ...
      Open Access
      Article
    • Direct observation of pressure-driven valence electron transfer in Ba3BiRu2O9, Ba3BiIr2O9 and Ba4BiIr3O12 

      Blanchard, Peter E R; Chapman, Karena W; Heald, Steve M; Zbiri, Mohamed; Johnson, Mark R; Kennedy, Brendan J; Ling, Chris D
      Published 2016
      The hexagonal perovskites Ba3BiIr2O9, Ba3BiRu2O9 and Ba4BiIr3O12 all undergo pressure-induced 1% volume collapses above 5 GPa. These first-order transitions have been ascribed to internal transfer of valence electrons ...
      Open Access
      Article
    • Magnetic Structure and Properties of the Rechargeable Battery Insertion Compound Na2FePO4F 

      Avdeev, Maxim; Ling, Chris D; Oyama, G; Yamada, A; Barpanda, P; Tan, Thiam Teck; Li, Sean
      Published 2014
      The magnetic structure and properties of sodium iron fluorophosphate Na2FePO4F (s.g. Pbcn), a cathode material for rechargeable batteries, were studied using magnetometry and neutron powder diffraction. The material, which ...
      Open Access
      Article
    • Zig-zag magnetic ordering in honeycomb-layered Na3Co2SbO6 

      Wong, Cheryl; Avdeev, Maxim; Ling, Chris D
      Published 2016
      Na3Co2SbO6 is a layered oxide with a hexagonal O3-type structure, in which CdI2- type edge-sharing MO6 octahedral layers are intercalated by Na. The MO6 octahedral layer in turn adopts a honeycomb ordering pattern of ...
      Open Access
      Article
    • Single Crystal and Magnetic Structures of maricite-type AgMnVO4 

      Yahia, H B; Gaudin, E; Shikano, M; Avdeev, Maxim; Ling, Chris D
      Published 2015
      Single crystals of the ternary manganese vanadate AgMnVO4, were grown using AgVO3 flux. The structure was determined from single crystal X-ray diffraction data. The magnetic structure and properties of AgMnVO4 were ...
      Open Access
      Article