Tuesday, February 5, 2013

The birth of a very-high-field superconductor

The birth of a very-high-field superconductor: When cooled with liquid helium, many HTS materials, including Bi-2212, can conduct large electric currents without resistance even in the presence of huge magnetic fields. But so far scientists only have managed to turn three of these HTS materials into the long wires that are necessary to make coils. Among these materials, Bi-2212 stands out as the only HTS that can be fabricated as a round wire. This makes Bi-2212 a perfect candidate for winding cables and coils without significantly changing present magnet technology...

...they have developed a technique that prevents bubble formation almost entirely by performing the melting and re-solidification of materials under high external gas pressure. The group observed five times higher current in a long wire sample made by the new method compared to an identical sample made by the standard recipe.

No comments:

Post a Comment