Title :
Artificial flux pinning in Nb and Nb/sub 3/Sn superconductors
Author :
Zhou, R. ; Hong, S. ; Marancik, W. ; Kear, B.
Author_Institution :
Oxford Instrum. Inc., Carteret, NJ, USA
fDate :
3/1/1993 12:00:00 AM
Abstract :
Some results on artificial flux pinning centers (APCs) introduced into Nb filaments are reported. The APCs are copper in a nanometer scale which is comparable to the fluxon diameter. The preliminary results show a significant current density increase in APC samples compared with the cold worked Nb samples. The effect of APC on the upper critical field and superconducting transition temperature is also investigated. The effect of APC on the superconducting properties of Nb/sub 3/Sn which is formed by solid state diffusion process is also studied.<>
Keywords :
critical current density (superconductivity); flux pinning; nanostructured materials; niobium; niobium alloys; superconducting critical field; superconducting transition temperature; tin alloys; type II superconductors; Nb; Nb/sub 3/Sn; current density; filaments; flux pinning centers; nanometer scale; solid state diffusion; superconducting transition temperature; upper critical field; Copper; Flux pinning; Niobium compounds; Niobium-tin; Shape; Superconducting transition temperature; Superconductivity; Tin; Titanium compounds; Wire;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
