Ceramics based on lanthanum-doped barium titanate, method of preparation and uses
US7939007B2 · kind B2 · utility
5Cited by
4References
7Claims
0Family size
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Key dates
| Filing date | Apr 18, 2007 |
| Grant date | May 10, 2011 |
| Priority date | — |
| Expiry date | Sep 4, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01G4/33
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The present invention relates to a method of preparing ceramics based on lanthanum-doped barium titanate, which comprises the following steps: (a) flash sintering of lanthanum-doped barium titanate powders; and (b) heat treatment of the material thus obtained, in an air atmosphere or in an oxidising atmosphere. The invention also relates to ceramics based on lanthanum-doped barium titanate, possessing a very high real part of the relative dielectric permittivity, and to their use for obtaining capacitors of high capacitance and high capacitance per unit volume for high-voltage withstand capability.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.