Thin film seeds for melt processing textured superconductors for practical applications
Abstract
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.
- Inventors:
- Issue Date:
- Research Org.:
- Univ. of Chicago, IL (United States)
- Sponsoring Org.:
- USDOE, Washington, DC (United States)
- OSTI Identifier:
- 321294
- Patent Number(s):
- 5869431
- Application Number:
- PAN: 8-632,549; TRN: 99:003328
- Assignee:
- Univ. of Chicago, IL (United States)
- DOE Contract Number:
- W-31109-ENG-38
- Resource Type:
- Patent
- Resource Relation:
- Other Information: PBD: 9 Feb 1999
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE; FABRICATION; HIGH-TC SUPERCONDUCTORS; LANTHANUM OXIDES; YTTRIUM OXIDES; BARIUM OXIDES; COPPER OXIDES; THIN FILMS; SUPERCONDUCTING FILMS; NEODYMIUM; SAMARIUM
Citation Formats
Veal, B W, Paulikas, A, Balachandran, U, and Zhong, W. Thin film seeds for melt processing textured superconductors for practical applications. United States: N. p., 1999.
Web.
Veal, B W, Paulikas, A, Balachandran, U, & Zhong, W. Thin film seeds for melt processing textured superconductors for practical applications. United States.
Veal, B W, Paulikas, A, Balachandran, U, and Zhong, W. Tue .
"Thin film seeds for melt processing textured superconductors for practical applications". United States.
@article{osti_321294,
title = {Thin film seeds for melt processing textured superconductors for practical applications},
author = {Veal, B W and Paulikas, A and Balachandran, U and Zhong, W},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Feb 09 00:00:00 EST 1999},
month = {Tue Feb 09 00:00:00 EST 1999}
}
Works referenced in this record:
Processing of large YBa2 Cu3Ox domains for levitation applications by a Nd1+x Ba2−x Cu3 Oy-Seeded melt-growth technique
journal, November 1994
- Todt, V. R.; Sengupta, S.; Shi, Donglu
- Journal of Electronic Materials, Vol. 23, Issue 11
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
- Badaye, Massoud; Wang, Furen; Kanke, Yukio
- Applied Physics Letters, Vol. 66, Issue 16