Method of producing bismuth layered compound
US5935549A · kind A · utility
2Cited by
4References
1Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 26, 1996 |
| Grant date | Aug 10, 1999 |
| Priority date | — |
| Expiry date | Mar 26, 2016 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01P2006/40
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A process is disclosed for making a bismuth layered compound, such as Bi.sub.2 SrTa.sub.2 O.sub.9, by forming mixture of Bi.sub.2 O.sub.3, Ta.sub.2 O.sub.5 and a compound selected from strontium hydroxide or strontium nitrate, grinding the mixture, shaping the ground mixture at elevated temperature and pressure to form a pellet of bismuth strontium tantalum oxide having a fluorite structure and then heating the pellet in a flow of oxygen at 800-1000.degree. C. until a single phase bismuth layered compound is obtained.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.