Observation of flux creep through columnar defects in YBa[sub 2]Cu[sub 3]O[sub 7] crystals
Journal Article
·
· Physical Review, B: Condensed Matter; (United States)
- Laboratoire des Solides Irradies, Ecole Polytechnique, 91128 Palaiseau (France)
- Materials Science Division, Argonne National Laboratory, Argonne, Illinois 60439 (United States)
- Department of Physics, Bar-Ilan University, Ramat-Gan (Israel)
- IBM Thomas J. Watson Research Center, Yorktown Heights, New York 10598 (United States)
Defects in the form of cylindrical amorphous tracks were introduced into YBa[sub 2]Cu[sub 3]O[sub 7] 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.
- Research Organization:
- Argonne National Laboratory (ANL), Argonne, IL
- DOE Contract Number:
- W-31109-ENG-38
- OSTI ID:
- 6671374
- Journal Information:
- Physical Review, B: Condensed Matter; (United States), Journal Name: Physical Review, B: Condensed Matter; (United States) Vol. 47:9; ISSN PRBMDO; ISSN 0163-1829
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
360207* -- Ceramics
Cermets
& Refractories-- Superconducting Properties-- (1992-)
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
BARIUM OXIDES
CHALCOGENIDES
CHARGED PARTICLES
COPPER COMPOUNDS
COPPER OXIDES
CRYSTAL DEFECTS
CRYSTAL STRUCTURE
ENERGY RANGE
FLUX DENSITY
GEV RANGE
GEV RANGE 01-10
HIGH-TC SUPERCONDUCTORS
IONS
LEAD IONS
MAGNETIC FLUX
OXIDES
OXYGEN COMPOUNDS
PHYSICAL RADIATION EFFECTS
RADIATION EFFECTS
SUPERCONDUCTORS
TRANSITION ELEMENT COMPOUNDS
YTTRIUM COMPOUNDS
YTTRIUM OXIDES
360207* -- Ceramics
Cermets
& Refractories-- Superconducting Properties-- (1992-)
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
BARIUM OXIDES
CHALCOGENIDES
CHARGED PARTICLES
COPPER COMPOUNDS
COPPER OXIDES
CRYSTAL DEFECTS
CRYSTAL STRUCTURE
ENERGY RANGE
FLUX DENSITY
GEV RANGE
GEV RANGE 01-10
HIGH-TC SUPERCONDUCTORS
IONS
LEAD IONS
MAGNETIC FLUX
OXIDES
OXYGEN COMPOUNDS
PHYSICAL RADIATION EFFECTS
RADIATION EFFECTS
SUPERCONDUCTORS
TRANSITION ELEMENT COMPOUNDS
YTTRIUM COMPOUNDS
YTTRIUM OXIDES