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), Journal Name: Chemistry of Materials; (United States) Vol. 4:5; ISSN CMATEX; ISSN 0897-4756
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
360201* -- Ceramics
Cermets
& Refractories-- Preparation & Fabrication
360207 -- Ceramics
Cermets
& Refractories-- Superconducting Properties-- (1992-)
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
BARIUM OXIDES
CHALCOGENIDES
CHEMICAL PREPARATION
COPPER COMPOUNDS
COPPER OXIDES
CRYSTAL LATTICES
CRYSTAL STRUCTURE
FILMS
HIGH-TC SUPERCONDUCTORS
ORTHORHOMBIC LATTICES
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
SUPERCONDUCTORS
SYNTHESIS
THERMODYNAMIC PROPERTIES
THIN FILMS
TRANSITION ELEMENT COMPOUNDS
TRANSITION TEMPERATURE
YTTRIUM COMPOUNDS
YTTRIUM OXIDES