Microstructure and critical current density of zone melt textured YBa sub 2 Cu sub 3 O sub 6+ x /Y sub 2 BaCuO sub 5 with BaSnO sub 3 additions
- Department of Electrical Engineering, University of Notre Dame, Notre Dame, Indiana 46556 (US)
Additions of BaSnO{sub 3} have been made to YBa{sub 2}Cu{sub 3}O{sub 6+{ital x}}/Y{sub 2}BaCuO{sub 5} composite wires to examine its potential for improving solidification processing and enhancing pinning. Zone melting has been used to produce texture in extruded YBa{sub 2}Cu{sub 3}O{sub 6+{ital x}} (Y-123) wires with Y{sub 2}BaCuO{sub 5}(211) and BaSnO{sub 3} additions. BaSnO{sub 3} additions markedly improve the magnetization properties over similarly textured Y-123 or Y-123+211 wires in low fields, but do not show a noticeable improvement at higher fields ({gt}2 T). Microstructural effects of BaSnO{sub 3} include the growth of much larger Y-123 grains, and a substantial reduction in size of 211 precipitates. Magnetic critical current densities ({ital J}{sub {ital c}}) in excess of 1.2{times}10{sup 5} A/cm{sup 2} in zero field, and 3.0{times}10{sup 4} A/cm{sup 2} at 1 T are observed.
- DOE Contract Number:
- FG02-90ER45427
- OSTI ID:
- 5776710
- Journal Information:
- Applied Physics Letters; (USA), Journal Name: Applied Physics Letters; (USA) Vol. 59:1; ISSN APPLA; ISSN 0003-6951
- Country of Publication:
- United States
- Language:
- English
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ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
BARIUM OXIDES
CHALCOGENIDES
COPPER COMPOUNDS
COPPER OXIDES
CRITICAL CURRENT
CRYSTAL STRUCTURE
CURRENTS
ELECTRIC CONDUCTIVITY
ELECTRIC CURRENTS
ELECTRICAL PROPERTIES
MAGNETIZATION
MICROSTRUCTURE
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
SUPERCONDUCTIVITY
TIN COMPOUNDS
TIN OXIDES
TRANSITION ELEMENT COMPOUNDS
YTTRIUM COMPOUNDS
YTTRIUM OXIDES