Patent ID: 6218341
Filing Date: 2001-04-17
Classification: C04B,H01L,Y10S

Abstract:
A process for preparing a superconductor which is a low anisotropy, high temperature superconductor, comprising:providing a target in molded form comprised of one of the superconductor or constituent elements of the superconductor, the superconductor having a layered crystal structure, having a superconducting transition temperature, Tc, of 110 K or more, and having a composition expressed by:Cu.sub.1-z M.sub.z Ae.sub.2 Ca.sub.x-1 Cu.sub.x O.sub.y,where M is at least one member selected from the group consisting of (a) a trivalent ion of Tl, and (b) polyvalent ions of Mo, W, and Re, Ae is at least one of Ba and Sr, x ranges from 1 to 10, and y ranges from 2x+1 to 2x+4, and z ranges from 0<z.ltoreq.0.5; andforming a film of the superconductor from the target on a substrate by one of sputtering or laser abrasion.