Title :
Critical currents in Pb1.2-xSnxMo6S8 wires
Author :
Rimikis, G. ; Goldacker, W. ; Specking, W. ; Flukiger, R.
Author_Institution :
Inst. fuer Tech. Phys., Kernforschungszentrum Karlsruhe, Germany
fDate :
3/1/1991 12:00:00 AM
Abstract :
Increased critical current densities Jc up to 2×104 A/cm2 at 4.2 K and 20 T were found for quaternary Chevrel-phase Pb1.2-xSnxMo6S 8 wires. Compared to the ternary compounds, the composition was varied over the whole mixing range, and the change of the crystal structure parameters Tc and Jc was analyzed and discussed with respect to the observed Jc enhancement. These results were obtained for different wire preparation techniques using unreacted or HIP (hot isostatically pressed) prereacted starting materials, but always the same current-stabilized (Cu) and steel-reinforced wire configuration. A very good reproducibility of the Jc values indicates homogeneous material properties of the filaments and a uniform wire cross section
Keywords :
critical current density (superconductivity); crystal atomic structure of inorganic compounds; hot pressing; lead compounds; molybdenum compounds; superconducting transition temperature; tin compounds; type II superconductors; 4.2 K; Chevrel-phase; Jc enhancement; Pb1.2-xSnxMo6S8 wires; critical current densities; crystal structure parameters; filaments; homogeneous material properties; hot isostatic pressing; prereacted starting materials; steel-reinforced wire configuration; transition temperature; uniform wire cross section; wire preparation techniques; Critical current density; Diffraction; Hip; Lattices; Lead; Magnetic fields; Powders; Temperature measurement; Tin; Wires;
Journal_Title :
Magnetics, IEEE Transactions on
