Electric-field-inducible deformable material
US6399529B1 · kind B1 · utility
3Cited by
3References
1Claims
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Key dates
| Filing date | Jun 7, 2000 |
| Grant date | Jun 4, 2002 |
| Priority date | — |
| Expiry date | Jul 11, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10N30/8536
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
An electric-field-inducible deformable porcelain material is provided, comprising a main component BaTiO3, with 0.05 to 2 wt % of at least one selected from Mn, Cu and Co in terms of a metal added thereto. The crystal phase in the porcelain is a single perovskite phase, and the value of the transversal electric-field-inducible deformation is 300×10−6 or more in the field strength of 2000 V/mm. It is presumed that the amount of the rotating 90° domain becomes greater, and the electric-field-induced deformation due to this is increased. Thus, a sufficient displacement amount as a piezoelectric material is obtained.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.