A general scaling relation for the critical current density in Nb3Sn

Details A general scaling relation for the critical current density in Nb3Sn A general scaling relation for the critical current density in Nb3Sn

2006-08-18

arxiv.org/abs/cond-mat/0608404v1

Physics

Condensed Matter

Superconductivity

Accepted Topical Review for Superconductor, Science and Technology

Scientific paper

10.1088/0953-2048/19/10/R02

We review the scaling relations for the critical current density (Jc) in Nb3Sn wires and include recent findings on the variation of the upper critical field (Hc2) with temperature (T) and A15 composition. We highlight deficiencies in the Summers/Ekin relations, which are not able to account for the correct Jc(T) dependence. Available Jc(H) results indicate that the magnetic field dependence for all wires can be described with Kramer's flux shear model, if non-linearities in Kramer plots are attributed to A15 inhomogeneities. The strain (eps) dependence is introduced through a temperature and strain dependent Hc2*(T,eps) and Ginzburg- Landau parameter kappa1(T,eps) and a strain dependent critical temperature Tc(eps). This is more consistent than the usual Ekin unification, which uses two separate and different dependencies on Hc2*(T) and Hc2*(eps). Using a correct temperature dependence and accounting for the A15 inhomogeneities leads to a remarkable simple relation for Jc(H,T,eps). Finally, a new relation for s(eps) is proposed, based on the first, second and third strain invariants.

Affiliated with

Also associated with

No associations

Rating

A general scaling relation for the critical current density in Nb3Sn does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with A general scaling relation for the critical current density in Nb3Sn, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A general scaling relation for the critical current density in Nb3Sn will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-567291