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US 8,783,835 B2Granted
Piezoelectric element, liquid ejecting head, and liquid ejecting apparatus
AssigneeSeiko Epson Corporation
InventorsToshiaki Takahashi, Tomohiro Sakai
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Abstract
A piezoelectric element comprises a piezoelectric layer and electrodes provided to the piezoelectric layer. The piezoelectric layer has a perovskite structure that includes Bi, Fe, Ba, Ti, and Co, and the mole ratio of Co to the total amount of Co and Fe is 0.02 or more and 0.07 or less.
Claims6
A piezoelectric element, comprising
- a piezoelectric layer;
- and
- electrodes provided to the piezoelectric layer,
- wherein the piezoelectric layer has a perovskite structure that includes Bi, Fe, Ba, Ti, and Co, and a mole ratio of Co to the total amount of Co and Fe is 0.02 or more and 0.07 or less and a general formula of the piezoelectric layer is:
- [a{Bi(Fe1-bCob)O3}−(1−a){BaTiO3}],
- wherein 0.6≦a≦0.9.
3 more elements
Dependencies are inferred from the claim text.