Critical surface of multifilamentary Nb/sub 3/Sn wires

摘要

Voltage-current characteristics (VCC) of multifilamentary Nb/sub 3/Sn wire at magnetic fields up to 8 T and temperatures up to 17 K are presented. the VCC are exponential in the studies interval of magnetic fields and temperatures. The dependences of J/sub c/(B,T) and J/sub 0/(B,T) were derived. The results obtained are explained by the presence of Nb/sub 3/Sn components that differ in critical parameters.