Stress/strain dependence of ac loss and critical current of Bi2Sr2Ca2Cu3O10 reinforced tape

Guo Min Zhang; Schwartz, Justin; Sastry, P.V.P.S. S.; Liang Zhen Lin; Li Ye Xiao; Yun Jia Yu
November 2004
Applied Physics Letters;11/15/2004, Vol. 85 Issue 20, p4687
Academic Journal
The critical current and ac loss of a stainless steel reinforced Bi2Sr2Ca2Cu3O10 composite superconducting tape were measured under tensile stress/strain at 77 K. By use of the definition of irreversible strain, a formula describing the variation of the critical current with strain was proposed. A relationship between ac loss and tensile strain was developed from Norris' formula and the critical current-strain relation. It is shown that the experimental results agree well with the values calculated from our formulas.


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