Published March 1, 1993
| Version v1
Journal article
Observation of flux creep through columnar defects in YBa2Cu3O7 crystals
- 1. Laboratoire des Solides Irradies, Ecole Polytechnique, 91128 Palaiseau (France)
- 2. Materials Science Division, Argonne National Laboratory, Argonne, Illinois 60439 (United States)
- 3. Department of Physics, Bar-Ilan University, Ramat-Gan (Israel)
- 4. IBM Thomas J. Watson Research Center, Yorktown Heights, New York 10598 (United States)
Description
Defects in the form of cylindrical amorphous tracks were introduced into YBa2Cu3O7 crystals by irradiation with 5.3-GeV Pb ions. The columnar defects formed provide maximum possible pinning of flux lines parallel to the tracks and induce giant enhancement of magnetic irreversibility. However, even for this strong pinning, magnetic decay was measured at high temperatures. Relaxation is nonlogarithmic and exhibits an increase of the effective barrier for flux creep with decreasing persistent current. This behavior is interpreted in the framework of the nucleation creep model
Additional details
Publishing Information
- Journal Title
- Physical Review. B, Condensed Matter
- Journal Volume
- 47
- Journal Issue
- 9
- Journal Page Range
- p. 5531-5534.
- ISSN
- 0163-1829
- CODEN
- PRBMDO
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 24049419
- Subject category
- S36: MATERIALS SCIENCE;
- Descriptors DEI
- BARIUM OXIDES; COPPER OXIDES; CRYSTAL DEFECTS; FLUX DENSITY; GEV RANGE 01-10; HIGH-TC SUPERCONDUCTORS; LEAD IONS; MAGNETIC FLUX; PHYSICAL RADIATION EFFECTS; YTTRIUM OXIDES
- Descriptors DEC
- ALKALINE EARTH METAL COMPOUNDS; BARIUM COMPOUNDS; CHALCOGENIDES; CHARGED PARTICLES; COPPER COMPOUNDS; CRYSTAL STRUCTURE; ENERGY RANGE; GEV RANGE; IONS; OXIDES; OXYGEN COMPOUNDS; RADIATION EFFECTS; SUPERCONDUCTORS; TRANSITION ELEMENT COMPOUNDS; YTTRIUM COMPOUNDS