Piezoelectric material, piezoelectric element, vibration wave motor, optical apparatus, and electronic apparatus
Number of patents in Portfolio can not be more than 2000
United States of America
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Dec 14, 2021
Grant Date -
Feb 7, 2019
app pub date -
Aug 1, 2018
filing date -
Aug 1, 2018
priority date (Note) -
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status (Latency Note)
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Abstract
A piezoelectric material which is low in load on the environment, and also satisfies both the requirements of a high piezoelectric constant and a high mechanical quality factor. The piezoelectric material comprises a plurality of crystal grains containing Ba, Ca, Ti, Zr, Mn, and O. An average equivalent circle diameter of the crystal grains is not smaller than 1.0 μm and not larger than 10 μm. The crystal grains include crystal grains A each having a first domain with a width of not smaller than 300 nm and not larger than 800 nm, and crystal grains B each having a second domain with a width of not smaller than 20 nm and not larger than 50 nm.
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International Classification(s)
- H01L:SEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICE....
- H04N:PICTORIAL COMMUNICATION, e.g. TELEVISION
- C04B:LIME; MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREO....
- H02N:ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
- G02B:OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
- B32B:LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA....
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