Persistent current density and flux creep in Bi-Sr-Ca-Cu-O/Ag tapes with splayed columnar defects from 0.8 GeV proton irradiation

Author

Thompson, J.R. ; Krusin-Elbaum, L. ; Kim, Y.C. ; Christen, D.K. ; Marwick, A.D. ; Wheeler, R. ; Li, C. ; Patel, S. ; Shaw, D.T. ; Lisowski, P. ; Ullmann, J.

Author_Institution

Oak Ridge Nat. Lab., TN, USA

Volume

5

Issue

2

fYear

1995

fDate

6/1/1995 12:00:00 AM

Firstpage

1876

Lastpage

1879

Abstract

Composite Bi/sub 2/Sr/sub 2/Ca/sub 1/Cu/sub 2/O/sub 8//Ag tapes were irradiated with 0.8 GeV protons to create splayed columnar defects in the superconductor. The resultant effective pinning of vortices leads to an enhanced persistent current density in the CuO planes, displacement of the irreversibility line to higher temperatures and magnetic fields, and a major reduction in the logarithmic time decay rate of the supercurrent density.<>

Keywords

bismuth compounds; calcium compounds; composite superconductors; critical current density (superconductivity); crystal defects; flux creep; flux pinning; high-temperature superconductors; proton effects; silver; strontium compounds; superconducting tapes; 0.8 GeV; Bi/sub 2/Sr/sub 2/CaCu/sub 2/O/sub 8/-Ag; BiSrCaCuO/Ag tapes; CuO planes; composite Bi/sub 2/Sr/sub 2/Ca/sub 1/Cu/sub 2/O/sub 8//Ag tapes; enhanced persistent current density; flux creep; high temperature superconductors; irreversibility line displacement; logarithmic time decay rate; proton irradiation; splayed columnar defects; supercurrent density; vortices pinning; Creep; Crystals; Laboratories; Persistent currents; Physics; Protons; Superconducting films; Superconducting materials; Superconductivity; Temperature;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/77.402947

Filename

402947