抄録
High Tc superconducting YBCO compounds have been prepared by Ar-F eximer laser ablation on SrTiO3 and on metalic substrates. Critical temperature (Tc) of the specimen formed on SrTiO3 (100) substrate was 88K. Critical current densities (Jc) at 77K over 2mm×2mm squared area at 1.0T and 8.0T were 1.5×104A/cm2 and 2.0×103A/cm2, respectively. The excellent Jc properties in magnetic field despite of the weak c-axis grain alignment encourages practical conductor fabrication by this method. YBCO on the substrate, Hastelloy c-276, with SrTiO3 thin buffer layer for one of the metalic substrates in view of long wire has been prepared by this method with high Tc of 83K and Jc of 1, 000A/cm2 at 77K.
