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Supercurrent Dissipation and Strain-Induced Damage in (Bi, Pb)2Sr2Ca2Cu3O10/Ag Tape



R D. Spal, G N. Riley, C J. Christopherson


Supercurrent dissipation and strain-induced damage in Bi-2223/Ag high temperature superconductor composite tape, at 77 K in self-field, are studied by IV curve analysis. Five dissipation models are considered, and differently processed tapes are compared. We find it essential to correct for self-field effects. Collective flux creep stands out as the only dissipation mechanism which explains the data. Confirmation of the analysis is obtained by verifying two predicted quantities: the crack number density, and the self-field dependence of the critical current density. Identification of the main dissipation mechanism in Bi-2223/Ag tape has great practical value, becuase it enables definitive tape characterization, based on intrinsic physical properties.
Applied Physics Letters
No. 8


axial tensile strain, Bi-2223/Ag composite tape, collective flux creep, current transfer length, current-voltage (I-V) curve, fracture, high temperature superconductor, self-field effect supercurrent dissipati


Spal, R. , Riley, G. and Christopherson, C. (2002), Supercurrent Dissipation and Strain-Induced Damage in (Bi, Pb)<sub>2</sub>Sr<sub>2</sub>Ca<sub>2</sub>Cu<sub>3</sub>O<sub>10</sub>/Ag Tape, Applied Physics Letters (Accessed April 16, 2024)
Created February 1, 2002, Updated February 19, 2017