Effects of shock-induced defects on flux pinning in YBa sub 2 Cu sub 3 O sub 7-. delta
Conference
·
OSTI ID:5733132
- Lawrence Livermore National Lab., CA (USA)
A composite specimen of YBa{sub 2}Cu{sub 3}O{sub 7-{delta}} and silver was fabricated by shock-compacting to 167 kbar a mixture of YBa{sub 2}Cu{sub 3}O{sub 7-{delta}} and silver powders. The magnetic flux pinning energy of this specimen was then measured as a function of temperature using flux relaxation data obtained with a SQUID magnetometer. Our results show that the pinning energy of the shock-compacted sample is significantly higher than the pinning energy of the YBa{sub 2}Cu{sub 3}O{sub 7-{delta}} before compaction. The increase in flux pinning energy is presumably due to the introduction of shock-induced defects into the YBa{sub 2}Cu{sub 3}O{sub 7-{delta}}. This result is significant because higher pinning energies imply higher intragranular critical currents. 8 refs., 1 tab.
- Research Organization:
- Lawrence Livermore National Lab., CA (USA)
- Sponsoring Organization:
- DOD; DOE/DP
- DOE Contract Number:
- W-7405-ENG-48
- OSTI ID:
- 5733132
- Report Number(s):
- UCRL-101900; CONF-890718--30; ON: DE90000824
- Country of Publication:
- United States
- Language:
- English
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Conference
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Tue Aug 01 00:00:00 EDT 1989
·
OSTI ID:5733177
Increase in the flux-pinning energy of YBa sub 2 Cu sub 3 O sub 7 minus. delta. by shock compaction
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·
Mon May 14 00:00:00 EDT 1990
· Applied Physics Letters; (USA)
·
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Journal Article
·
Wed Feb 06 23:00:00 EST 1991
· Journal of Physical Chemistry; (United States)
·
OSTI ID:5294385
Related Subjects
36 MATERIALS SCIENCE
360202 -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
BARIUM OXIDES
CHALCOGENIDES
COMPACTING
COPPER COMPOUNDS
COPPER OXIDES
CRITICAL CURRENT
CURRENTS
DEFECTS
ELECTRIC CONDUCTIVITY
ELECTRIC CURRENTS
ELECTRICAL PROPERTIES
ELECTRONIC EQUIPMENT
ELEMENTS
EQUIPMENT
FLUXMETERS
MAGNETIC FLUX
MEASURING INSTRUMENTS
METALS
MICROWAVE EQUIPMENT
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
SHOCK WAVES
SILVER
SQUID DEVICES
SUPERCONDUCTING DEVICES
SUPERCONDUCTIVITY
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS
YTTRIUM COMPOUNDS
YTTRIUM OXIDES
360202 -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
BARIUM OXIDES
CHALCOGENIDES
COMPACTING
COPPER COMPOUNDS
COPPER OXIDES
CRITICAL CURRENT
CURRENTS
DEFECTS
ELECTRIC CONDUCTIVITY
ELECTRIC CURRENTS
ELECTRICAL PROPERTIES
ELECTRONIC EQUIPMENT
ELEMENTS
EQUIPMENT
FLUXMETERS
MAGNETIC FLUX
MEASURING INSTRUMENTS
METALS
MICROWAVE EQUIPMENT
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
SHOCK WAVES
SILVER
SQUID DEVICES
SUPERCONDUCTING DEVICES
SUPERCONDUCTIVITY
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS
YTTRIUM COMPOUNDS
YTTRIUM OXIDES