Enhanced Flux Pinning by Crystal Defects in Melt-Textured YBa2Cu3Ox
Conference
·
OSTI ID:5941288
- Argonne National Laboratory (ANL), Argonne, IL (United States)
- Univ. of Illinois at Urbana-Champaign, IL (United States)
YBa2Cu3Ox bars have been partially melted to develop highly textured microstructures. Transmission electron microscopy (TEM) revealed the presence of a large amount of intragranular defects such as dislocations and stacking faults, and a few Y2BaCuO5 particles, within the matrices. These crystal defects strongly affected intragranular Jc values and the flux-creep behavior. After annealing the textured samples at high temperature for 80 h, considerable reduction in the magnetization Jc was observed. This microstructure-related Jc variation indicated that the lattice defects observed by TEM were connected with the observed enhanced flux pinning. Possible pinning mechanisms are discussed.
- Research Organization:
- Argonne National Laboratory (ANL), Argonne, IL (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES). Materials Sciences & Engineering Division (MSE)
- DOE Contract Number:
- W-31109-ENG-38
- OSTI ID:
- 5941288
- Report Number(s):
- ANL/CP--72496; CONF-910202--10; ON: DE91011120
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
ALKALINE EARTH METAL COMPOUNDS
ANNEALING
BARIUM COMPOUNDS
BARIUM OXIDES
CHALCOGENIDES
COPPER COMPOUNDS
COPPER OXIDES
CRYSTAL DEFECTS
CRYSTAL STRUCTURE
DISLOCATIONS
EDGE DISLOCATIONS
ELECTRON MICROSCOPY
HEAT TREATMENTS
HIGH-TC SUPERCONDUCTORS
LINE DEFECTS
MAGNETIC FLUX
MICROSCOPY
MICROSTRUCTURE
OXIDES
OXYGEN COMPOUNDS
SUPERCONDUCTORS
TEXTURE
TRANSITION ELEMENT COMPOUNDS
TRANSMISSION ELECTRON MICROSCOPY
YTTRIUM COMPOUNDS
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
ALKALINE EARTH METAL COMPOUNDS
ANNEALING
BARIUM COMPOUNDS
BARIUM OXIDES
CHALCOGENIDES
COPPER COMPOUNDS
COPPER OXIDES
CRYSTAL DEFECTS
CRYSTAL STRUCTURE
DISLOCATIONS
EDGE DISLOCATIONS
ELECTRON MICROSCOPY
HEAT TREATMENTS
HIGH-TC SUPERCONDUCTORS
LINE DEFECTS
MAGNETIC FLUX
MICROSCOPY
MICROSTRUCTURE
OXIDES
OXYGEN COMPOUNDS
SUPERCONDUCTORS
TEXTURE
TRANSITION ELEMENT COMPOUNDS
TRANSMISSION ELECTRON MICROSCOPY
YTTRIUM COMPOUNDS