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

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

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 irreversib...

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Veröffentlicht in:IEEE transactions on applied superconductivity 1995-06, Vol.5 (2), p.1876-1879
Hauptverfasser: 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.
Format: Artikel
Sprache:eng
Schlagworte:
Creep
Crystals
Laboratories
Persistent currents
Physics
Protons
Superconducting films
Superconducting materials
Superconductivity
Temperature
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Zusammenfassung: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.< >
ISSN:1051-8223
1558-2515
DOI:10.1109/77.402947