c-Axis oriented orthorhombic YBa[sub 2]Cu[sub 3]O[sub 7[minus][delta]] on silver from organic solvent solutions of metal iodides
- Dow Corning Corp., Midland, MI (United States)
It has been known for some time that highly oriented or single crystals of YBa[sub 2]Cu[sub 3]O[sub 7[minus][delta]] (YBCO) formed on substrates such as single-crystal strontium titanate generally show a much higher critical current density (J[sub c]) than bulk samples. Usually these thin films of YBCO are produced by high-energy vapor processes such as sputtering, laser ablation, and molecular beam epitaxy. Hamdi et al. have reported growth of YBCO on SrTiO[sub 3] single crystals from solutions of yttrium, barium, and copper neodecanoates. Single-crystal ionic substrates preclude any formation of long lengths of YBCO on flexible substrates. This thin-film study was undertaken to find thin-film processes which might yield YBCO in ribbon or wire configurations. Silver would appear to be a good choice for such a substrate. Greuter et al. reported orienting YBCO powder on silver foil by coating a suspension of oxides centrifugally (or by dip coating) to yield microcrystalline c-axis oriented textured material. A film of a thickness of the order of 1 [mu]m was achieved after firing at 930[degrees]C. Thus, an investigation of the c-axis orientation of YBCO from the solution processing of iodide precursors on silver began. 17 ref., 4 figs.
- OSTI ID:
- 5123039
- Journal Information:
- Chemistry of Materials; (United States), Vol. 4:5; ISSN 0897-4756
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
BARIUM OXIDES
CHEMICAL PREPARATION
COPPER OXIDES
YTTRIUM OXIDES
HIGH-TC SUPERCONDUCTORS
ORTHORHOMBIC LATTICES
THIN FILMS
TRANSITION TEMPERATURE
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
CHALCOGENIDES
COPPER COMPOUNDS
CRYSTAL LATTICES
CRYSTAL STRUCTURE
FILMS
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
SUPERCONDUCTORS
SYNTHESIS
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENT COMPOUNDS
YTTRIUM COMPOUNDS
360201* - Ceramics
Cermets
& Refractories- Preparation & Fabrication
360207 - Ceramics
Cermets
& Refractories- Superconducting Properties- (1992-)