Ag Enhanced LGS Grown YbBaCuO sub 7 Epitaxial Films.

Effects of Ag addition on the epitaxially grown YbBa sub 2 Cu sub 3O sub 7 superconductor on a SrTiuO sub 3 (100) substrate by liquid-gas- solidification (LGS) process have been investigated. Ag acts as flux and does not incorporate in the oxide formation. Its addition however enhances the transport properties resulting from a reduction in film-substrate interaction. Values of T sub c (R = 0) = 90K and J sub c (77K, H = 0) = 3 x 10 sup 4 A/cm sup 2 can be achieved reproducively.