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The current-carrying characteristics in the Bi-Pb-Sr-Ca-Cu-O/Ag textured tape by powder in tube process

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4 Author(s)
Zhang, H. ; Shanghai Inst. of Metall., Acad. Sinica, China ; Zhou, E.Y. ; Yu, H.G. ; Wu, H.

Current-carrying characteristics have been investigated for Bi/sub 1.8/Pb/sub 0.4/Sr/sub 2/Ca/sub 2/Cu/sub 3/O/sub x//Ag textured composite tapes fabricated by the powder-in-tube process. It is found that: intermediate uniaxially pressing can effectively raise J/sub c/; the strain-tolerance of J/sub c/ can be much improved in multicore composites; the composite tapes have strong J/sub c/ anisotropy with the angle between the magnetic field and the normal of tape surface, and the anisotropy increases with an increase in magnetic field; the V-I curve at low voltage can be fitted by power law V=AI/sup n/, where n varies with J/sub c/; and the averaged potential for flux motion is estimated from the magnetic relaxation measurement to be 130 MeV.<>

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Applied Superconductivity, IEEE Transactions on  (Volume:3 ,  Issue: 1 )