HIGH JC YBCO THICK-FILMS PREPARED BY LPE METHOD

High-J(c) YBa2Cu3Oy thick films were by the liquid phase epitaxy (LPE) . The growth rate was typically about 2 mu m/min, which was 10-10(2) t imes larger than that by conventional vapor growth techniques. The T-c of the best film exceeded 88K after oxygen annealing, and the transpo rt zero-field J(c) was over 10(5) A/cm(2) at 77 K. The peak effect in J(c)-B characteristics was observed at several tesla by magnetic and t ransport measurements. Based on the micro-structure, the relevant peak effect is considered to be caused by stacking faults which act as a f ield induced pinning center.