Simple test for high Jc and low Rs superconducting thin films

Details Simple test for high Jc and low Rs superconducting thin films Simple test for high Jc and low Rs superconducting thin films

2003-02-13

arxiv.org/abs/cond-mat/0302250v1

Physics

Condensed Matter

Superconductivity

5 pages including 2 figures, to be published as Rapid Commun. in Supercond. Sci. Technol

Scientific paper

10.1088/0953-2048/16/5/102

A simple method, fishing high-Tc superconductor thin films out of liquid nitrogen bath by a permanent magnet (field > Hc1) due to the effect of high flux pinning, has been suggested to identify films having high critical current density (Jc > 106 A/cm2 at 77 K) and thus a low microwave surface resistance (Rs). We have demonstrated that a Nd-Fe-B magnet, having a maximum field of ~ 0.5 T, could fish out Tl-1223 superconducting thin films on LSAT substrate with a thickness of ~ 5000 Angstrong having Jc > 1 MA/cm2 (at 77 K) whereas it could not fish out other films with Jc < 0.1 MA/cm2 at 77 K. The fished out films exhibit Rs values 237 - 245 ((at 77 K and 10 GHz, which is lower than that (Rs = 317 (() of the best YBCO film at the same temperature and frequency. On the other hand, the non-fishable films show very high Rs values. This method is a very simple tool to test for high Jc and good microwave properties of superconducting films of large area which otherwise require a special and expensive tool.

Affiliated with

Also associated with

No associations

Rating

Simple test for high Jc and low Rs superconducting thin films 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 Simple test for high Jc and low Rs superconducting thin films, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Simple test for high Jc and low Rs superconducting thin films will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-332814