Thin film seeds for melt processing textured superconductors for practical applications
A method of fabricating bulk superconducting material such as RBa{sub 2}Cu{sub 3}O{sub 7{minus}{delta}} where R is La or Y comprising depositing a thin epitaxially oriented film of Nd or Sm (123) on an oxide substrate is disclosed. The powder oxides of RBa{sub 2}Cu{sub 3}O{sub 7{minus}{delta}} or oxides and/or carbonates of R and Ba and Cu present in mole ratios to form RBa{sub 2}Cu{sub 3}O{sub 7{minus}{delta}}, where R is Y or La are heated, in physical contact with the thin film of Nd or Sm (123) on the oxide substrate to a temperature sufficient to form a liquid phase in the oxide or carbonate mixture while maintaining the thin film solid to grow a large single domain 123 superconducting material. Then the material is cooled. The thin film is between 200 {angstrom} and 2000 {angstrom}. A construction prepared by the method is also disclosed.
- Research Organization:
- Univ. of Chicago, IL (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- W-31109-ENG-38
- Assignee:
- Univ. of Chicago, IL (United States)
- Patent Number(s):
- US 5,869,431/A/
- Application Number:
- PAN: 8-632,549; TRN: 99:003328
- OSTI ID:
- 321294
- Resource Relation:
- Other Information: PBD: 9 Feb 1999
- Country of Publication:
- United States
- Language:
- English
Processing of large YBa2 Cu3Ox domains for levitation applications by a Nd1+x Ba2−x Cu3 Oy-Seeded melt-growth technique
|
journal | November 1994 |
High‐quality c ‐axis oriented superconducting Nd 1+ x Ba 2− x Cu 3 O 7− d thin films deposited by the laser ablation method
|
journal | April 1995 |
Similar Records
Seed crystals with improved properties for melt processing superconductors for practical applications
Precipitation of oxide superconductors and magnets from alkali-metal hydroxide fluxes