Observation of proposed flux pinning sites in neutron-irradiated YBa sub 2 Cu sub 3 O sub 7 minus x
Journal Article
·
· Applied Physics Letters; (USA)
- Carnegie Mellon University, Pittsburgh, PA (USA)
- Los Alamos National Laboratory, Los Alamos, NM (USA)
Microstructure and magnetic hysteresis have been compared for two samples of the YBa{sub 2}Cu{sub 3}O{sub 7{minus}{delta}} ({delta}{similar to}0) high-temperature superconductor, one unirradiated, and one irradiated with fast neutrons ({ital E}{gt}0.1 MeV) to a fluence of 3{times}10{sup 18} n/cm{sup 2}. Notable changes in the microstructure include strain-induced contrast from regions 2--7 nm in size. An intrinsic critical current density ({ital J}{sub {ital c}}) of 4.6{times}10{sup 6} A/cm{sup 2} in zero field at 4 K has been determined from magnetic hysteresis measurements for the irradiated sample while 1.2{times}10{sup 6} A/cm{sup 2} is noted for the unirradiated sample. We propose that the observed defect structure in the irradiated material is responsible for increased pinning and consequently higher {ital J}{sub {ital c}}'s.
- OSTI ID:
- 6290040
- Journal Information:
- Applied Physics Letters; (USA), Journal Name: Applied Physics Letters; (USA) Vol. 57:20; ISSN APPLA; ISSN 0003-6951
- Country of Publication:
- United States
- Language:
- English
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Journal Article
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Thu Nov 14 23:00:00 EST 1991
· Journal of Applied Physics; (United States)
·
OSTI ID:5096811
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·
OSTI ID:7048117
Role of point defects and their clusters for flux pinning as determined from irradiation and annealing experiments in YBa[sub 2]Cu[sub 3]O[sub 7[minus][delta]] single crystals
Journal Article
·
Sun Aug 01 00:00:00 EDT 1993
· Physical Review, B: Condensed Matter; (United States)
·
OSTI ID:6134306
Related Subjects
36 MATERIALS SCIENCE
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
360206 -- Ceramics
Cermets
& Refractories-- Radiation Effects
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
BARIUM OXIDES
BARYONS
CHALCOGENIDES
COPPER COMPOUNDS
COPPER OXIDES
CRITICAL CURRENT
CRYSTAL STRUCTURE
CURRENTS
ELECTRIC CURRENTS
ELEMENTARY PARTICLES
FERMIONS
HADRONS
HIGH-TC SUPERCONDUCTORS
HYSTERESIS
MAGNETIC FLUX
MAGNETIZATION
MICROSTRUCTURE
NEUTRONS
NUCLEONS
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
PHYSICAL RADIATION EFFECTS
RADIATION EFFECTS
SUPERCONDUCTORS
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENT COMPOUNDS
TRANSITION TEMPERATURE
YTTRIUM COMPOUNDS
YTTRIUM OXIDES
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
360206 -- Ceramics
Cermets
& Refractories-- Radiation Effects
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
BARIUM OXIDES
BARYONS
CHALCOGENIDES
COPPER COMPOUNDS
COPPER OXIDES
CRITICAL CURRENT
CRYSTAL STRUCTURE
CURRENTS
ELECTRIC CURRENTS
ELEMENTARY PARTICLES
FERMIONS
HADRONS
HIGH-TC SUPERCONDUCTORS
HYSTERESIS
MAGNETIC FLUX
MAGNETIZATION
MICROSTRUCTURE
NEUTRONS
NUCLEONS
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
PHYSICAL RADIATION EFFECTS
RADIATION EFFECTS
SUPERCONDUCTORS
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENT COMPOUNDS
TRANSITION TEMPERATURE
YTTRIUM COMPOUNDS
YTTRIUM OXIDES