Title :
Effect of precursor powder properties on magnetic and electrical transport properties of (Bi,Pb)-2223-tapes
Author :
Sailer, Bernd ; Schwaigerer, Frank ; Gibson, Katharina ; Meyer, H. Jiirgen ; Lehmann, Martin ; Woodall, Lee ; Gerards, Michael
Author_Institution :
Inst. of Inorg. Chem., Tubingen Univ., Germany
fDate :
3/1/2001 12:00:00 AM
Abstract :
The quality of superconducting silver clad (Bi,Pb)-2223-tapes essentially depends on the applied precursor powder. The choice of the processing parameters of the precursor preparation (calcination procedure) is decisive for the current carrying capability of tapes. The properties of 2212 and the occurence of secondary phases in precursors can be regulated by partial oxygen pressure, temperature, and time in the calcination annealing. Precursors containing orthorhombic (Bi,Pb)-2212 with high Tc without Pb4+-phases yield high critical currents
Keywords :
annealing; bismuth compounds; calcium compounds; composite superconductors; critical currents; high-temperature superconductors; lead compounds; magnetic susceptibility; powder technology; silver; strontium compounds; superconducting tapes; Ag; BiPbSrCaCuO; HTSC; calcination annealing; calcination procedure; critical currents; current carrying capability; electrical transport properties; magnetic properties; orthorhombic (Bi,Pb)-2212; partial oxygen pressure; precursor powder properties; processing parameters; secondary phases; superconducting silver clad (Bi,Pb)-2223-tapes; temperature; Annealing; Calcination; Critical current; High temperature superconductors; Magnetic properties; Powders; Superconducting cables; Superconducting films; Superconducting magnets; Temperature distribution;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
