Piezoelectric ceramic, method for manufacturing the same, piezoelectric element, and electronic apparatus
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United States of America Patent
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Jan 16, 2018
Grant Date -
Jul 30, 2015
app pub date -
Jan 27, 2015
filing date -
Jan 29, 2014
priority date (Note) -
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Abstract
A piezoelectric ceramic includes a perovskite-type metal oxide containing barium titanate, and Mn. When a surface thereof along the remanent polarization direction is subjected to X-ray diffraction analysis at room temperature, the ratio of the diffraction intensity of the (002) plane to the diffraction intensity of the (200) plane is 1.0 or more, the diffraction peak of the (002) plane has a half width of 1.2° or less, and the lattice constant of the c-axis thereof and the lattice constant of the a-axis thereof satisfy the relationship 1.004≦c/a≦1.010.
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International Classification(s)
- H01L:SEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICE....
- B06B:GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS I....
- C04B:LIME; MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREO....
- B41J:TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. M....
- H02N:ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
- G02B:OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
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