Comparison of irreversibility lines of silver-sheathed Bi-2223, Tl-1223 and Tl-1234 superconducting tapes
Journal
Materials Chemistry and Physics
Journal Volume
43
Journal Issue
1
Pages
83-85
Date Issued
1996
Author(s)
Abstract
The irreversibility lines of silver-sheathed (Bi,Pb)2Sr2Ca2Cu3O10 (Bi-2223), (Tl,Pb,Bi)(Sr,Ba)2Ca2Cu3O9 (Tl-1223) and (Tl,Pb)Sr2Ca3Cu4O11 (Tl-1234) superconducting tapes were investigated and compared with those of other superconducting systems. We have demonstrated that the shape of the irreversibility lines of Tl-1223 and Tl-1234 superconducting tapes are similar in behavior to those of YBa2Cu3O7 (Y-123) and (Tl,Pb)Sr2(Ca,Y)Cu2O7 (Tl-1212) systems and better than those of Tl2Ba2Ca2Cu3O10 (Tl-2223) and (Bi,Pb)2Sr2Ca2Cu3O10 (Bi-2223) superconductors. This means .that the flux pinning ability of Tl-1223 and Tl-1234 superconducting tapes was stronger than that of Bi-2223 and Tl-2223 superconductors. The possible reason for controlling flux pinning can be attributed to the intrinsic crystal structure difference in the materials.
Type
journal article