Solid State Science and Technology, Vol. 15, No 1 (2007) 43-48
Corresponding Author: email@example.com
FABRICATION AND TRANSPORT PROPERTIES OF In-DOPED Tl1212/Ag SINGLE-CORE DIP-COATED TAPES
M. I. Yusofa, R. Omara A. K. Yahyaa and Z. Awangb
aFaculty of Applied Sciences, Universiti Teknologi MARA,40450 Shah Alam, Selangor
bMicrowave Center, Faculty of Electrical Eng, Universiti Teknologi MARA, 40450 Shah Alam, Selangor.
Superconducting powder from high purity chemicals with nominal composition of Tl0.9Bi0.1Sr1.9In0.1Ca0.9Y0.1Cu2O7 were used to fabricate Tl-1212/Ag superconducting tapes using the dip-coating (DC) method. The tapes were subjected to reannealing under different heating conditions where some of the tapes were subjected to intermediate mechanical rolling. Results showed that annealing temperature and annealing duration together with intermediate mechanical rolling (IR) could be optimized to increase Tc and 1212 phase formation and Jc of In-substituted Tl-1212/Ag tapes. The highest Jc was observed for the tape, which was reannealed at 910 °C for a total duration of 60 minutes and subjected to IR. The increased Jc could be due to the densification ofsuperconducting core and increase in 1212 phase after thermomechanical treatment.
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