The Real Structure of Cu3Ni2SbO6 and Cu3Co2SbO6 Delafossites with Honeycomb
نویسندگان
چکیده
The Delafossite (CuFeO2) structure is formed from triangular layers of edge-sharing metal-oxygen octahedra separated by Cu 1+ sticks. It resembles the NaFeO2 structure, with layers of Cu 1+ sticks replacing the layers of Na + octahedra. Materials with such structures have been of interest as transparent films with p-type conductivity, thermoelectrics, superconductors, and multiferroics. Two polytypes are commonly found for Delafossites: The 2H polytype, in which the axes of the octahedra are oriented 180° in neighboring layers that are stacked in a hexagonal close packed fashion, and the 3R polytype, in which all octahedra axes are oriented in the same direction, and the stacking is cubic close packed.
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