Magnetic Shielding Property of Grain-oriented Superconducting Tube

Abstract

A Bi(Pb)-Sr-Ca-Cu-O superconducting tube has been developed for a magnetic shielding. The tube, which was composed of superconducting grains oriented parallel to the bottom surface, was made by laminating the oriented green sheets prepared by a doctor blade method. As the magnetic field was applied parallel and vertical to the axis of the tube, the center in the tube was shielded from the magnetic flux up to 77Gs and 28Gs, respectively. Compared with the magnetic shielding in a non-oriented tube, no effect of grain orientation was found.