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Superconducting glass ceramics with T/sub c/ = 100 K based on the Bi-Pb-Sr-Ca-Cu-O system

Journal Article · · Appl. Phys. Lett.; (United States)
DOI:https://doi.org/10.1063/1.101482· OSTI ID:6479769
Superconducting glass ceramics of Bi/sub 0.8/Pb/sub 0.2/SrCaCu/sub 1.5/O/sub y/ (sample A) and BiPb/sub 0.2/SrCaCu/sub 1.5/O/sub y/ (sample B) have been prepared by using the melt quenching method. It was found that the volume fraction of the high T/sub c/ phases in sample A annealed at 830 or 840 /sup 0/C for 250 h was much higher than that in sample B. The annealed (840 /sup 0/C, 250 h) sample A exhibited superconductivity with a T/sub c/ (zero) of 100 K and a critical current density (77 K, zero magnetic field) of 120 A/cm/sup 2/.
Research Organization:
Department of Chemistry, Nagaoka University of Technology, Nagaoka 940-21, Japan
OSTI ID:
6479769
Journal Information:
Appl. Phys. Lett.; (United States), Journal Name: Appl. Phys. Lett.; (United States) Vol. 54:12; ISSN APPLA
Country of Publication:
United States
Language:
English