Abstract
Sm1+xBa2−xCu3Oy(Sm123) films were grown on MgO substrates by the Liquid Phase Epitaxy (LPE) process in air atmosphere using BaO-CuO solvents with Ba/Cu ratios of 3/5 and 3/4. The substitution ratios of Sm/Ba in Sm123 films were less than 0.02 for different growth conditions including temperature and Ba/Cu ratios of the solvent. Tc value of 94 K was obtained in the Sm123 films grown from the Ba/Cu=3/5 solvent in air after O2 annealing at 573 K for 100 h. These results suggest that the substitution ratio of Sm/Ba is smaller than that of Nd/Ba in Nd123 crystal and that the high Tc value would be obtained even grown from the melt of Ba/Cu=3/5 in the air atmosphere. Peak effects in the Jc-H curves were observed in the Sm123 films annealed by continuous cooling for oxygenation condition.
