Abstract
Superconducting properties of (Bi,Pb)-2223/Ag tapes prepared using four different precursors calcined under different conditions viz. (1) dynamic vacuum with oxygen partial pressure, (2) static vacuum, (3) static air and flowing O 2 have been studied. The precursors showed wide variations in their phase assemblage and partial melting temperature. Tapes prepared using them exhibited entirely different properties in terms of phase evolution, microstructure and J C. The precursor calcined in vacuum with oxygen partial pressure yielded the best results with distinctly higher J C. The variation in the tape characteristics brought about by different precursors has been analysed and the importance of dynamic vacuum calcination in oxygen partial pressure has been highlighted.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
