Effect of Y sub 2 BaCuO sub 5 inclusions on flux pinning in YBa sub 2 Cu sub 3 O sub 7 minus. delta
- AT T Bell Laboratories, Murray Hill, New Jersey 07974 (US)
The effect of Y{sub 2}BaCuO{sub 5} (211) inclusions on flux pinning in the YBa{sub 2}Cu{sub 3}O{sub 7{minus}{delta}} (123) superconductor has been investigated. Intragranular {ital J}{sub {ital c}} has been measured on samples containing various amounts of dispersed (211) particles (0%--44%) with various particle sizes (1.3--10.4 {mu}m). The results clearly show that the presence of (211) particles (at least down to the micron size level) neither significantly enhances the flux pinning nor deteriorates {ital J}{sub {ital c}}. The observed insensitivity of {ital J}{sub {ital c}} to the variation in the total particle surface area indicates that the likelihood of a substantial interface-pinning effect is minimal. While the (211) inclusions appear to assist in the peritectic reactions resulting in better microstructural perfection during melt processing, particle size needs to be controlled to a much finer scale in order for them to serve as efficient pinning centers.
- OSTI ID:
- 5682275
- Journal Information:
- Applied Physics Letters; (USA), Journal Name: Applied Physics Letters; (USA) Vol. 59:5; ISSN APPLA; ISSN 0003-6951
- Country of Publication:
- United States
- Language:
- English
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Defects near the Y{sub 2}BaCuO{sub 5}/YBa{sub 2}Cu{sub 3}O{sub 7{minus}x} interface and their effect on flux-pinning in melt- processed and quench-melt-growth processed YBa{sub 2}Cu{sub 3}O{sub 7{minus}x}
Defects near the Y sub 2 BaCuO sub 5 /YBa sub 2 Cu sub 3 O sub 7 minus x interface and their effect on flux-pinning in melt- processed and quench-melt-growth processed YBa sub 2 Cu sub 3 O sub 7 minus x
Related Subjects
360202 -- Ceramics
Cermets
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ALKALINE EARTH METAL COMPOUNDS
AMINES
AMMONIUM COMPOUNDS
BARIUM COMPOUNDS
BARIUM OXIDES
CHALCOGENIDES
COPPER COMPOUNDS
COPPER OXIDES
CRITICAL CURRENT
CRYSTAL STRUCTURE
CURRENTS
ELECTRIC CURRENTS
HIGH-TC SUPERCONDUCTORS
INCLUSIONS
MAGNETIC FLUX
MICROSTRUCTURE
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
QUATERNARY COMPOUNDS
SUPERCONDUCTORS
TRANSITION ELEMENT COMPOUNDS
YTTRIUM COMPOUNDS
YTTRIUM OXIDES