Advances in Superconductivity V pp 1305-1307 | Cite as
Magnetic Shielding Effect of Bi(Pb)2Sr2Ca2Cu3O8 Superconductor Prepared by Hot-Forging
Conference paper
Abstract
Highly oriented Bi(Pb)2Sr2Ca2Cu3O8 superconductor plates were prepared by hot-forging for magnetic shielding. The forging was carried out at 750°C–860°C and 100–1000 MPa in air. The orientation factor was estimated to be 0.97 with the c-axis parallel to the pressing direction, from the X-ray diffraction pattern. This orientation factor gave the highest critical current density, Jc = 31,800 A/cm2 (77K, 0T). The prepared plate shielded magnetic field up to 90 gauss. The magnetic shielding effect depended on Jc and the sample homogeneity. The results might be explained by the critical state model.
Key words
Bi(Pb)2Sr2Ca2Cu3O8 superconductor hot-forging magnetic shieldingPreview
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© Springer-Verlag Tokyo 1993