Structural characterization of the Ag/YBCO interface
Thesis/Dissertation
·
OSTI ID:5573221
This research is intended to characterize the interface microstructure and long-term stability of the deposited silver metal in contact with the superconducting oxide YBa{sub 2}Cu{sub 3}O{sub 7{minus}x} (YBCO). High-resolution transmission electron microscopy (HRTEM) observations of the interfacial regions reveal that Ag contacts to YBCO occurred without any intermediate phase formation at the interface. The Ag metal exhibits a preferred orientation relationship with YBCO, in which the densely packed planes and directions of the metal are parallel to those of the superconductor. Annealing of the Ag/YBCO interface resulted in outdiffusion of yttrium and oxygen at regions where the surface of YBCO was rough. This diffusion, however, did not result in the formation of continuous layers at the Ag/YBCO interface but only to growth of Ag{sub 2}Y and Ag{sub 2}O inclusions. Thus it is believed that the stability of the Ag/YBCO depends on the quality of the surface of YBCO, especially its structure. Treatment of the surface of YBCO by ion-bombardment yielded flat surfaces but damaged a layer of about 30{angstrom}. Such a cleaning process improved the quality of the deposited Ag since the Ag grains were larger and contained low defects concentration.
- Research Organization:
- California Univ., Berkeley, CA (United States)
- OSTI ID:
- 5573221
- Country of Publication:
- United States
- Language:
- English
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YBa sub 2 Cu sub 3 O sub 7 minus x to Si interconnection for hybrid superconductor/ semiconductor integration
Technical Report
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Tue May 01 00:00:00 EDT 1990
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OSTI ID:6259552
Microstructure of YBa{sub 2}Cu{sub 3}O{sub 7{minus}{delta}}/Ag bilayers grown in situ on step-edge SrTiO{sub 3} substrates
Conference
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Thu Oct 31 23:00:00 EST 1996
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OSTI ID:392179
YBa sub 2 Cu sub 3 O sub 7 minus x to Si interconnection for hybrid superconductor/ semiconductor integration
Journal Article
·
Sun Nov 01 23:00:00 EST 1992
· Applied Physics Letters; (United States)
·
OSTI ID:7028245
Related Subjects
36 MATERIALS SCIENCE
360602* -- Other Materials-- Structure & Phase Studies
665411 -- Basic Superconductivity Studies-- (1992-)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
BARIUM OXIDES
CHALCOGENIDES
COMPOSITE MATERIALS
COPPER COMPOUNDS
COPPER OXIDES
CRYSTAL STRUCTURE
ELECTRIC CONTACTS
ELECTRICAL EQUIPMENT
ELEMENTS
EQUIPMENT
FILMS
INTERFACES
MATERIALS
METALS
MICROSTRUCTURE
OXIDES
OXYGEN COMPOUNDS
RESEARCH PROGRAMS
SILVER
STABILITY
SUPERCONDUCTING COMPOSITES
SUPERCONDUCTING FILMS
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS
YTTRIUM COMPOUNDS
YTTRIUM OXIDES
360602* -- Other Materials-- Structure & Phase Studies
665411 -- Basic Superconductivity Studies-- (1992-)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
BARIUM OXIDES
CHALCOGENIDES
COMPOSITE MATERIALS
COPPER COMPOUNDS
COPPER OXIDES
CRYSTAL STRUCTURE
ELECTRIC CONTACTS
ELECTRICAL EQUIPMENT
ELEMENTS
EQUIPMENT
FILMS
INTERFACES
MATERIALS
METALS
MICROSTRUCTURE
OXIDES
OXYGEN COMPOUNDS
RESEARCH PROGRAMS
SILVER
STABILITY
SUPERCONDUCTING COMPOSITES
SUPERCONDUCTING FILMS
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS
YTTRIUM COMPOUNDS
YTTRIUM OXIDES