Title :
Shielding current flowing in oxide superconducting plates
Author :
Kamijo, H. ; Kawano, K.
Author_Institution :
Railway Tech. Res. Inst., Tokyo, Japan
fDate :
6/1/1997 12:00:00 AM
Abstract :
The shielding currents flowing inside (Bi,Pb)/sub 2/Sr/sub 2/Ca/sub 2/Cu/sub 3/O/sub y/ oxide superconducting plates are estimated by reverse calculation based on the results of magnetic shielding experiments. The relationship of the magnitude of the external field to the distribution and magnitude of the shielding current was derived. The critical current density of the shielding current agrees approximately with the results obtained by the susceptibility method, but is smaller than the results obtained by the four-probe electrical resistance method.
Keywords :
bismuth compounds; calcium compounds; critical current density (superconductivity); high-temperature superconductors; lead compounds; magnetic shielding; strontium compounds; (Bi,Pb)/sub 2/Sr/sub 2/Ca/sub 2/Cu/sub 3/O/sub y/; (BiPb)/sub 2/Sr/sub 2/Ca/sub 2/Cu/sub 3/O; critical current density; external field; four-probe electrical resistance method; magnetic shielding; reverse calculation; shielding currents; superconducting plates; susceptibility method; Circuits; Critical current density; Current measurement; Electric resistance; Electric variables measurement; Magnetic analysis; Magnetic field measurement; Magnetic levitation; Magnetic shielding; Superconductivity;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
