Patent ID: 7622424
Filing Date: 2009-11-24
Classification: C23C,H01L,Y10T

Abstract:
1. An article comprising: a biaxially textured substrate having thereon a superconducting layer, wherein said superconducting layer comprises a rare earth alkaline earth copper oxide 123 superconductor, and wherein said substrate comprises a buffer layer; said superconducting layer having a thickness of greater than 0.8 μm; said superconductor layer having a Cu to alkaline earth metal ratio of about 1.5 at the buffer layer and the superconductor layer interface; said superconducting layer having an overall Cu to alkaline earth metal ratio of greater than 1.5; said superconducting layer comprising fluoride; and said superconducting layer having at least about 20 mol % excess copper.