Published March 18, 1997
| Version v1
Patent
Seed crystals with improved properties for melt processing superconductors for practical applications
Description
A method of fabricating bulk superconducting material is disclosed including RBa2Cu3O7-δ comprising heating compressed powder oxides and/or carbonates of R and Ba and Cu present in mole ratios to form RBa2Cu3O7-δ in physical contact with an oxide single crystal seed to a temperature sufficient to form a liquid phase in the RBa2Cu3O7-δ while maintaining the single crystal seed solid to grow the superconducting material and thereafter cooling to provide a material including RBa2Cu3O7-δ. R is a rare earth or Y or La and the single crystal seed has a lattice mismatch with RBa2Cu3O7-δ of less than about 2% at the growth temperature. The starting material may be such that the final product contains a minor amount of R2BaCuO5
Availability note (English)
Available from Patent and Trademark Office, Box 9, Washington, DC 20232 (United States).Additional details
Publishing Information
- Imprint Pagination
- [10 p.].
- IPC:
- Int. Cl. C30B 11/04.
- IPC
- Int. Cl. C30B 11/04.
- Patent number
- US patent document 5,611,854/A/
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 28044866
- Subject category
- S36: MATERIALS SCIENCE;
- Resource subtype / Literary indicator
- Non-conventional Literature
- Descriptors DEI
- BARIUM OXIDES; COPPER OXIDES; HIGH-TC SUPERCONDUCTORS; LANTHANUM OXIDES; SYNTHESIS; YTTRIUM OXIDES
- Descriptors DEC
- ALKALINE EARTH METAL COMPOUNDS; BARIUM COMPOUNDS; CHALCOGENIDES; COPPER COMPOUNDS; LANTHANUM COMPOUNDS; OXIDES; OXYGEN COMPOUNDS; RARE EARTH COMPOUNDS; SUPERCONDUCTORS; TRANSITION ELEMENT COMPOUNDS; YTTRIUM COMPOUNDS
Optional Information
- Secondary number(s)
- US patent application 8-531,399.