Effect of Sintering Conditions on Microstructure and the Superconducting Properties of YBa۲Cu۳O۷ x

YBa۲Cu۳O۷-X tapes fabricated from precursor powder, were used to investigate the effect of sintering conditions on the microstructure. The sintering experiments were carried out in oxygen over the temperature range of ۹۱۵-۹۵۰C. Scanning electron microscopy was used to examine the sintered products. The result indicated a significant increase in densification and grain growth when the tapes were heat treated above ۹۱۵C. The critical current density in the sintered tapes showed deteriotation when the sintering was done at temperatures above ۹۱۵C.

Keywords:

Superconductor , YBa۲Cu۳O۷ , X , D.C. Susceptibility , Critical Current Density , Microstructure