Improvement of J{sub c} and grain alignment of Bi-2212/Ag multilayer tapes by pre-annealing and intermediate rolling process
Journal Article
·
· Journal of Low Temperature Physics
The high transport critical current density (J{sub c}) > 500 kA/cm{sup 2} at 4.2 K, 10 T is obtained in the Bi-2212/Ag multilayer tapes fabricated by using PAIR (Pre-Annealing and Intermediate Rolling) and melt-solidification process. This J{sub c} value is twice higher than existing high-quality Bi-2212/Ag tapes (250 kA/cm{sup 2}). By applying PAIR process to Bi-2212/Ag tapes, Bi-2212 grain alignment is much improved and a large J{sub c} enhancement is achieved. J{sub c} has been increased strongly by performing pre-annealing at 840 C in oxygen (1 atm) and intermediate rolling with 25% deformation.
- Research Organization:
- National Research Inst. for Metals, Tsukuba (JP)
- OSTI ID:
- 20015347
- Journal Information:
- Journal of Low Temperature Physics, Journal Name: Journal of Low Temperature Physics Journal Issue: 5-6 Vol. 117; ISSN JLTPAC; ISSN 0022-2291
- Country of Publication:
- United States
- Language:
- English
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