Effect of columnar defects on reversible magnetization of superconducting Bi{sub 2}Sr{sub 2}Ca{sub 2}Cu{sub 3}O{sub 10+{delta}}
- Department of Applied Sciences, Brookhaven National Laboratory, Upton, New York 11973 (United States)
- Osaka Research Laboratories, Sumitomo Electric Industries, Ltd., Osaka, 554 (Japan)
- Laboratoire CRISMAT, CNRSURA, ISMRa, Caen (France)
{ital c}-axis-oriented superconducting Bi{sub 2}Sr{sub 2}Ca{sub 2}Cu{sub 3}O{sub 10+{delta}} (Bi-2223) tapes have been irradiated with 5.8-GeV Pb ions to produce columnar defects along the {ital c} axis. The magnetization {ital M} as a function of field and temperature were measured for both the unirradiated and irradiated samples at matching field {ital B}{sub {phi}} values of 1.28, 2.0, and 4 T. In striking contrast to the conventional log({ital B}) dependence of the reversible {ital M} in the London regime, the field dependence of the reversible {ital M} for the irradiated samples exhibits some unusual characteristics. A large reduction in the value of {ital M} was observed at {ital B}{le}{ital B}{sub {Phi}}, while a maximum appears at {ital B}{approx_gt}{ital B}{sub {Phi}}. We explain this field dependence in terms of the London model modified by the localization of the vortex lines in the columnar defects. Based on this study, we obtained the single vortex pinning energy for Bi-2223 by these columnar defects. {copyright} {ital 1996 The American Physical Society.}
- Research Organization:
- Brookhaven National Laboratory
- DOE Contract Number:
- AC02-76CH00016
- OSTI ID:
- 285983
- Journal Information:
- Physical Review, B: Condensed Matter, Journal Name: Physical Review, B: Condensed Matter Journal Issue: 2 Vol. 54; ISSN PRBMDO; ISSN 0163-1829
- Country of Publication:
- United States
- Language:
- English
Similar Records
Collapse of irreversible field of superconducting Bi{sub 2}Sr{sub 2}Ca{sub 2}Cu{sub 3}O{sub 10+{delta}}/Ag tapes with columnar defects
Correlation of flux lines in single-crystal Bi{sub 2}Sr{sub 2}CaCu{sub 2}O{sub 8} with columnar defects