Title :
Influence of external magnetic field and its orientation on transport AC losses in Bi-2223 and Tl-1223 silver sheathed tapes
Author :
Ciszek, M. ; Glowacki, B.A. ; Campbell, A.M. ; Ashworth, S.P. ; Liang, W.Y. ; Haldar, P. ; Selvamanickam, V.
Author_Institution :
IRC in Superconductivity, Cambridge Univ., UK
fDate :
6/1/1997 12:00:00 AM
Abstract :
In the paper we report measurements of energy losses caused by an AC transport current in silver sheathed multifilamentary Bi-2223 and mono core Tl-1223 tapes, as a function of the magnitude and orientation of the applied external magnetic field. The external magnetic field was rotated in the range of 0 to /spl plusmn/90 degrees with respect to the plane of the tapes, and was In all cases perpendicular to the transport current flow. The transport current losses in a range of DC applied fields are consistent with the Norris equation provided the DC critical current at the same applied field is used in his expression for the loss.
Keywords :
bismuth compounds; high-temperature superconductors; losses; multifilamentary superconductors; silver; superconducting tapes; thallium compounds; AC transport current; Bi/sub 2/Sr/sub 2/Ca/sub 2/Cu/sub 3/O-Ag; Norris equation; Tl/sub 1/Ba/sub 2/Ca/sub 2/Cu/sub 3/O-Ag; energy loss; magnetic field; monocore Tl-1223; multifilamentary Bi-2223; silver sheathed superconducting tape; Current measurement; Energy loss; Energy measurement; Equations; Loss measurement; MONOS devices; Magnetic cores; Magnetic field measurement; Magnetic fields; Silver;
Journal_Title :
Applied Superconductivity, IEEE Transactions on