NiGe2: a new intermetallic compound synthesized under high-pressure
2000; Elsevier BV; Volume: 305; Issue: 1-2 Linguagem: Inglês
10.1016/s0925-8388(00)00733-7
ISSN1873-4669
AutoresHirotsugu Takizawa, Kyota Uheda, Tadashi Endo,
Tópico(s)Rare-earth and actinide compounds
ResumoA new nickel germanide, NiGe2, was synthesized under high pressure and temperature condition and the crystal structure was solved by the Rietveld analysis of the powder X-ray diffraction data. Single phase NiGe2 was obtained from the stoichiometric mixture of elemental components by the reaction at 5.5 GPa and 700°C. The compound crystallizes into orthorhombic structure with the space group Cmca, isostructural with CoGe2. Lattice parameters were determined to be a=10.830(5) Å, b=5.763(3) Å, c=5.762(3) Å. The structure contains isolated Ni–Ni bonds along the a-axis. The compound is a metallic conductor with a temperature independent susceptibility.
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