Axial anisotropy of intergrain critical current in Bi-Pb-Sr-Ca-Cu-O
โ Scribed by Toshio Umemura; Kunihiko Egawa; Mitsunobu Wakata; Kiyoshi Yoshizaki; Baorong Ni; Teruo Matsushita
- Publisher
- Elsevier Science
- Year
- 1990
- Tongue
- English
- Weight
- 391 KB
- Volume
- 165-166
- Category
- Article
- ISSN
- 0921-4526
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โฆ Synopsis
Ihe intergrain critical current densities, J , parallel and perpendicular to c-axis were measured as a function of the magnetic field at 4.2 and 77.3K by an ac inductive method for the fairly oriented Bi 1 6PbO 4Sr2ca2CuPy specimens. 'Ihe J 's perpendicular to c-axis were higher than those parallel" to c-axis, about ten times wfthin 5T at 4.2K, and about three times within O.lT at 77.3K. Our results suggect the orientation of each grain to be especially worthwhile for performing the high J c at the low temperature.
๐ SIMILAR VOLUMES
Two samples, once and twice sintered, of a multiphase high-T, superconducting Bi,.8Pbo.2SrzCazCu,0, compound were studied through AC magnetic susceptibility and electrical resistivity measurements. Using the critical-state model, the intergranular critical-current density is calculated from the AC s
BiPbSrCaCuO silver sheathed high T c superconducting wires were fabricated through the solid reaction process. It is proposed in this paper that the magnetic field dependence of Jc of the wire is dominated by the Lorentz force perpendicular to the c-axis, caused by a transport current with c-axis co