The analysis of current distributions in filamentary conductors: the influence of intergrowths

Author

Volkozub, A.V. ; Everett, J. ; Perkins, G. ; Buscemi, P. ; Caplin, A.D. ; Dhalle, M. ; Marti, F. ; Grasso, G. ; Huang, Y.B. ; Flukiger, R.

Author_Institution

Blackett Lab., Imperial Coll. of Sci., Technol. & Med., London, UK

Volume

9

Issue

2

fYear

1999

fDate

6/1/1999 12:00:00 AM

Firstpage

2147

Lastpage

2150

Abstract

Filament isolation is an extremely important factor in multi-filament conductors. However, filament-bridging superconducting intergrowths have often been observed. We show from magnetisation, transport and Hall probe experiments on a range of BSCCO-2223 conductors that the effects of filament bridging are substantial. We infer that the critical current densities within the intergrowths, and also across their grain boundaries, are extremely high.

Keywords

bismuth compounds; calcium compounds; ceramics; critical current density (superconductivity); grain boundaries; high-temperature superconductors; magnetisation; multifilamentary superconductors; strontium compounds; BSCCO-2223 conductors; BiSrCaCuO; Hall probe experiments; critical current densities; current distributions; filament isolation; filament-bridging superconducting intergrowths; filamentary conductors; grain boundaries; intergrowths; magnetisation; multi-filament conductors; Conductors; Electric variables measurement; High temperature superconductors; Magnetic flux; Magnetization; Magnetostatics; Persistent currents; Q measurement; Superconducting filaments and wires; Superconducting magnets;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/77.784892

Filename

784892