Method for production of dielectric powder
US4636248A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 11, 1985 |
| Grant date | Jan 13, 1987 |
| Priority date | — |
| Expiry date | Oct 11, 2005 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01P2006/40
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A dielectric powder consisting of a solid solution of compounds selected at least one each from the two group (a) and (b) of compounds indicated below and having a chemical composition represented by the following general formula: EQU [ABO.sub.3 ].sub.1-x [A'(B'.sub.1-y B".sub.Y)O.sub.3 ].sub.x (I) (Wherein x and y satisfy 0<x<1 and 0<y<1 respectively), is produced by mixing metal alkoxides in proportions such that the proportions of the metallic elements thereof conform to the proportions of the metallic elements in the aforementioned general formula (I) and hydrolyzing the metal alkoxides contained in the resultant mixture: PA0 (a) Compounds of the ABO.sub.3 type perovskite structure and PA0 (b) Compounds of the A'(B'.sub.1/2 B".sub.1/2)O.sub.3, A'(B'.sub.1/3 B".sub.2/3)O.sub.3, or A'(B'.sub.2/3 B".sub.1/3)O.sub.3 type valency-compensating perovskite structure (wherein A and A' each denote a divalent metal, B a tetravalent metal, B' a divalent metal or a trivalent metal, and B" a pentavalent metal or a hexavalent metal).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.