Bi-Sr-Ca-Cu-O bulk superconductors with zero resistance above 110 K

Bi-Sr-Ca-Cu-O bulk superconductors with zero resistance above 110 K

Optimized processing to obtain bulk superconductors in Bi-Sr-Ca-Cu-O system with zero resistance above 110 K has been studied. The superconducting path of the high-T/sub c/ phase has been realized in multiphase polycrystalline samples. The resistance of a typical sample reaches zero at 111 K. The us...

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Bibliographic Details
Published in:IEEE transactions on magnetics Vol. 25; no. 2; pp. 2017 - 2020
Main Authors: Huang, H.S., Mao, S.N., Yao, Z.T., Liu, M.L., Ren, X.D., Zhang, K.S., Wu, Z.Y., Zhao, X., Liu, Y.-Z.
Format: Journal Article
Language:English
Published: IEEE 01-03-1989
Subjects:
Calcination
Chemistry
Conductivity
Electrical resistance measurement
Magnetic susceptibility
Physics
Superconducting materials
Superconducting transition temperature
Superconductivity
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Summary:Optimized processing to obtain bulk superconductors in Bi-Sr-Ca-Cu-O system with zero resistance above 110 K has been studied. The superconducting path of the high-T/sub c/ phase has been realized in multiphase polycrystalline samples. The resistance of a typical sample reaches zero at 111 K. The usual resistive tail extended to 80 K has been successfully cut off. The importance of the role CuO played in the sintering reactions for the formation of the 110 K phase is discussed on the basis of the results of DTA (differential thermal analysis) and TG experiments.< >
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ISSN:0018-9464
1941-0069
DOI:10.1109/20.92705