Superconductivity of a new phase with the hexagonal Nb{sub 3}S{sub 4} type structure: Preparation, crystal structure and electrical properties of nonstoichiometric indium vanadium sulfide
- Univ. Frankfurt (Germany). Inst. fuer Anorganische Chemie
- Walther-Meissner-Inst., Garching (Germany)
The nonstoichiometric ternary compound In{sub 0.69} V{sub 6}S{sub 8} was prepared via a low temperature diffusion reaction between hexagonal V{sub 3}S{sub 4} and In metal. The crystal structure solution reveals that In is strongly disordered within the hexagonal channels of the structure. The analysis of the structural data in connection with the data of other ternary A{sub x} V{sub 6}S{sub 8} phases gives evidences that the V-V bond length within the metal atom zig-zag chains parallel to the crystallographic c-axis is nearly not affected by the valence electron concentration (VEC) per V atom. On the other hand the distance between the chains increases with raising VEC, independent of the nature of the electropositive element A. The electrical resistivity of In{sub 0.69} V{sub 6}S{sub 8} was measured between 2 and 300 K. For the first time the authors have observed superconductivity in this compound. The title compound shows a transition into the superconducting state with a transition temperature {Tc} of 3.7 K.
- OSTI ID:
- 105932
- Journal Information:
- Materials Research Bulletin, Vol. 30, Issue 10; Other Information: PBD: Oct 1995
- Country of Publication:
- United States
- Language:
- English
Similar Records
Synthesis, structural analysis, and superconductivity of Ba{sub x}V{sub 6}S{sub 8}.
New members of the A{sub 2}M′M{sub 2}{sup ″} structure family (A=Ca, Sr, Yb, La; M′=In,Sn,Pb; M″=Si,Ge)