I-V characteristics of superconducting Ag/Bi/sub 2/Sr/sub 2/Ca/sub 2/Cu/sub 3/O/sub 10/ tapes

Author

Gubser, D.U. ; Soulen, R.J., Jr. ; Datta, T. ; Kirven, D.

Author_Institution

Naval Res. Lab., Washington, DC, USA

Volume

5

Issue

2

fYear

1995

fDate

6/1/1995 12:00:00 AM

Firstpage

1302

Lastpage

1304

Abstract

We have measured the current-voltage (I-V) characteristics of Ag-clad BiSrCaCuO tapes as a function of magnetic field (0-20 T) and temperature (4, 65, and 77 K). The magnetic field was applied parallel and perpendicular to the face of the tape. Samples were commercially prepared by the OPIT process. The I-V curves were analyzed by conventional means to extract J/sub c/ as a function of the applied magnetic field. Some of the curves were also fitted by an adaptation of the Ambegaokar-Halperin model from which were obtained J/sub c/ and the pinning potential. We found that, at 4 K, J/sub c/ from both sources were generally comparable with J/sub c/ /spl sim/10/sup 4/ A/cm/sup 2/ from 5 T to 20 T.<>

Keywords

bismuth compounds; calcium compounds; critical current density (superconductivity); flux pinning; high-temperature superconductors; silver; strontium compounds; superconducting tapes; 0 to 20 T; 4 K; 65 K; 77 K; Ag-Bi/sub 2/Sr/sub 2/Ca/sub 2/Cu/sub 3/O/sub 10/; Ambegaokar-Halperin model; I-V characteristics; critical current density; current-voltage characteristics; high temperature superconductors; magnetic field; pinning potential; superconducting Ag/Bi/sub 2/Sr/sub 2/Ca/sub 2/Cu/sub 3/O/sub 10/ tapes; Bismuth compounds; Copper; Current measurement; Magnetic field measurement; Perpendicular magnetic recording; Strontium; Superconducting films; Superconducting magnets; Temperature; Voltage;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/77.402801

Filename

402801