G. Krabbes et al., MODIFIED MELT TEXTURING PROCESS FOR YBCO BASED ON THE POLYTHERMIC SECTION YO1.5-BA0.4CU0.6O IN THE Y-BA-CU-O PHASE-DIAGRAM AT 0.21 BAR OXYGEN-PRESSURE, Physica. C, Superconductivity, 244(1-2), 1995, pp. 145-152
Y2O3 admired to 123 significantly influences the mechanism of melt tex
turing of YBCO. Based on phase diagram considerations, it is shown tha
t the process window for stable growth conditions can be considerably
increased. Furthermore, a lower process temperature (T-a = 960 degrees
C to 985 degrees C) becomes possible. Samples have been grown by both
directional solidification and zone melting techniques. The supercond
ucting properties are determined by local and integral levitation forc
e measurements.