We have measured the properties of a large number of Tl-1223 tapes as part of a programme to optimise the fabrication procedures. During this work we have noticed that the highest Icvalues are not proportionally dependent on the cross-sectional geometry of the tapes. There seems to be a limiting Icvalue of around 10-13 A in our samples (and those of many other groups). We have performed a series of experiments on self-field effects in Tl-1223 tapes and compared the results with calculated field distributions in tape-shaped conductors in different configurations. We conclude that the Icare self-field limited in these tapes when the currents being carried are around 10 A.
All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Energy Engineering and Power Technology
- Electrical and Electronic Engineering
Fox, S., Moore, J. C., Jenkins, R., Grovenor, C. R. M., Boffa, V., Bruzzese, R., & Jones, H. (1996). Self-field effects on critical current values in Tl-1223 tapes. Physica C: Superconductivity and its Applications, 257(3-4), 332 - 340. https://doi.org/10.1016/0921-4534(95)00762-8