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

Author

Zhang, H. ; Zhou, E.Y. ; Yu, H.G. ; Wu, H.

Author_Institution

Shanghai Inst. of Metall., Acad. Sinica, China

Volume

3

Issue

1

fYear

1993

fDate

3/1/1993 12:00:00 AM

Firstpage

965

Lastpage

967

Abstract

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.<>

Keywords

bismuth compounds; calcium compounds; composite superconductors; critical current density (superconductivity); flux creep; high-temperature superconductors; lead compounds; magnetic relaxation; powder technology; silver; strontium compounds; superconductive tunnelling; Bi/sub 1.8/Pb/sub 0.4/Sr/sub 2/Ca/sub 2/Cu/sub 3/O/sub x/-Ag; critical current density; flux motion; high temperature superconductivity; magnetic relaxation; multicore composites; powder-in-tube process; power law; strain-tolerance; textured composite tapes; uniaxially pressing; Anisotropic magnetoresistance; Artificial intelligence; Bismuth; Low voltage; Magnetic anisotropy; Magnetic field induced strain; Motion estimation; Multicore processing; Pressing; Strontium;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/77.233857

Filename

233857