• Title of article

    The layered metal Ti2PTe2

  • Author/Authors

    Frauke Philipp، نويسنده , , Peer Schmidt، نويسنده , , Michael Ruck، نويسنده , , Walter Schnelle، نويسنده , , Anna Isaeva، نويسنده ,

  • Issue Information
    روزنامه با شماره پیاپی سال 2008
  • Pages
    5
  • From page
    2859
  • To page
    2863
  • Abstract
    Crystals of Ti2PTe2 have been synthesised by chemical vapour transport. Ti2PTe2 crystallises, isostructural to the mineral tetradymite (Bi2STe2), in the space group R3¯m with unit-cell parameters a=3.6387(2) Å and c=28.486(2) Å for the hexagonal setting. In the structure, layers of isolated phosphide and telluride anions form an ordered close sphere-packing with titanium cations filling two-thirds of the octahedral voids. From XANES fluorescence, the presence of Ti4+ is clearly established. In accordance with the ionic formula (Ti4+)2(P3−)(Te2−)2(e−) metallic conductivity (ρ=40 μΩ cm at 300 K) and nearly temperature-independent paramagnetism are found. The electronic band structure shows bands of titanium states crossing the Fermi level in directions corresponding to the ab-plane and a band gap along the c-axis.
  • Keywords
    XANES-fluorescence , Electrical conductivity , Band structure , crystal structure , Titanium phosphide telluride
  • Journal title
    JOURNAL OF SOLID STATE CHEMISTRY
  • Serial Year
    2008
  • Journal title
    JOURNAL OF SOLID STATE CHEMISTRY
  • Record number

    1333487