Title :
Upper critical fields and critical current densities in bronze processed commercial multifilamentary Nb3Sn wires
Author :
Watanabe, K. ; Noto, K. ; Muto, Y.
Author_Institution :
Inst. for Mater. Res., Tohoku Univ., Sendai, Japan
fDate :
3/1/1991 12:00:00 AM
Abstract :
The Tc, Bc2, and Jc were investigated for superconductors in a residual strain state for bronze processed commercial multifilamentary Nb3Sn wires. It was found that the temperature dependence of Bc2 under strain obeys [1-(2/3)(πT/1.75T c)2] near T=0 and (1-T/Tc) near Tc. The establishment of the temperature scaling law of a global pinning force Fp=Jc×B was confirmed in commercial Nb3Sn wires
Keywords :
composite superconductors; critical current density (superconductivity); flux pinning; niobium alloys; superconducting critical field; superconducting transition temperature; tin alloys; type II superconductors; (NbTi)3Sn; A15 superconductor; Cu matrix; Cu-Nb3Sn; bronze processed; commercial wires; critical current densities; critical temperature; global pinning force; multifilamentary Nb3Sn wires; residual strain state; temperature dependence; temperature scaling law; upper critical fields; Capacitive sensors; Copper; Critical current density; Electrical resistance measurement; Niobium; Niobium-tin; Superconducting materials; Temperature dependence; Uniaxial strain; Wires;
Journal_Title :
Magnetics, IEEE Transactions on
