Piezoelectric composition and piezoelectric device
US11545613B2 · kind B2 · utility
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6Claims
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Key dates
| Filing date | Jan 14, 2020 |
| Grant date | Jan 3, 2023 |
| Priority date | — |
| Expiry date | Nov 7, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10N30/097
Abstract
A piezoelectric composition comprises an oxide having a perovskite structure, wherein the oxide contains bismuth, barium, iron and titanium; the X-ray diffraction pattern of the piezoelectric composition after a polarization treatment has a first peak and a second peak in the range of the diffraction angle 2θ of 38.6° or more and 39.6° or less; the diffraction angle 2θ of the first peak is smaller than the diffraction angle 2θ of the second peak; an intensity of the first peak is represented as IL; an intensity of the second peak is represented as IH; and IH/IL is 0.00 or more and 2.00 or less.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.