Angular, Temperature, and Strain Dependencies of the Critical Current of DI-BSCCO Tapes in High Magnetic Fields

作者：Sunwong Prapaiwan^*; Higgins Joshua S; Hampshire Damian P

来源：IEEE Transactions on Applied Superconductivity, 2011, 21(3): 2840-2844.

DOI：10.1109/TASC.2010.2097573

• Angular dependence
• BSCCO
• critical current
• reversible strain limit

High critical current density (J(c)) DI-BSCCO Bi-2223 superconducting tape has been developed by Sumitomo Electric Industries (SEI) using the Controlled Over-Pressure (CT-OP) technique to improve the texturing and densification. Further enhancement of the mechanical properties has been obtained using lamination. We have investigated the effect of magnetic field and field orientation on J(c) for a series of test DI-BSCCO tapes at 77 K and 4.2 K under tensile and compressive strains. These critical current data are strongly influenced by the anisotropy of Bi-2223, the texturing of the tape and its architecture. The magnetic field and angular dependence of J(c) at 77 K can be described using a simple anisotropic exponential magnetic field model which includes the effects of the two-dimensionality and grain misalignment in these composites.

• 出版日期2011-6