Critical Current Densities of Silver Sheathed Tl-Ba-Ca-Cu Oxide Superconducting Tapes
The Tl-Ba-Ca-Cu oxide (TBCCO) superconducting material was formed into tapes by means of the SSRP (Silver Sheath & Rolling Process). The superconducting properties of these tapes were measured and compared with those of the YBCO tapes fabricated by the same method.
The critical temperature Tc (zero resistivity) of the TBCCO tape was 107 K, and the maximum critical current density Jc of 3500 A/cm2 at 77 K was achieved in a tape with 0.05 mm thickness. It was observed that the Jc apparently depended on the thickness in the TBCCO as well as YBCO tape. The Jc of the TBCCO tapes was higher than that of YBCO tapes, which came from the thermal margine due to the higher Tc of the material.
KeywordsElectrical Resistivity Critical Temperature Critical Current Density Silver Wire Liquid Nitrogen Cool
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