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Influence of Repeated Tensile Stresses in C-Axis Direction on AC Losses in Multi-Filamentary Bi2223/Ag-Sheathed Wires

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6 Author(s)
Noda, T. ; Fac. of Sci. & Technol., Sophia Univ., Tokyo, Japan ; Ojima, T. ; Honzawa, R. ; Uno, T.
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The authors investigated influence of repeated and non-repeated c-axis tensile stresses on critical currents and AC transport losses in multi-filamentary Bi2223/Ag-sheathed tape wires reinforced by copper alloy tapes. Experimental results show that characteristics of the AC transport losses change and the manners of the changes are classified into three patterns, when the critical currents are degraded by the stresses. Features of defects caused in superconducting filaments by the stresses are discussed in relation to the three patterns of the transport loss characteristics.

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Applied Superconductivity, IEEE Transactions on  (Volume:22 ,  Issue: 3 )