Articles containing a cubic perovskite crystal structure
US5128316A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 4, 1990 |
| Grant date | Jul 7, 1992 |
| Priority date | — |
| Expiry date | Jun 4, 2010 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S505/779
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A cubic perovskite crystal structure is disclosed satisfying the unit cell formula: EQU R.sub.0.33+z A.sub.0.67 C.sub.1-y O.sub.3-x where PA1 R, A and C represent rare earth, alkaline earth and copper atoms, respectively, capable of forming a superconductive R.sub.1 A.sub.2 C.sub.3 orthorhombic perovskite crystal structure; PA1 x is 0.67 to 1.0; PA1 y is up to 0.2; and PA1 z is up to 0.1. The crystal structure can be used to form superconductive superlattices and weak links for Josephson junction devices. The crystal structure can be produced by laser ablation deposition at a temperature below that required for the formation of a superconductive R.sub.1 A.sub.2 C.sub.3 orthorhombic perovskite crystal structure. The crystal structure can be used as a substrate for the subsequent deposition of an R.sub.1 A.sub.2 C.sub.3 orthorhombic perovskite crystal structure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.