Piezoelectric material, piezoelectric element, method for manufacturing piezoelectric element, and electronic device
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United States of America Patent
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May 29, 2018
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app pub date -
May 28, 2015
filing date -
May 30, 2014
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Abstract
The present invention can provide a lead-free piezoelectric material having a high piezoelectric constant in the room temperature range. The present invention for this purpose is a piezoelectric material including a main component containing a perovskite metal oxide represented by following general formula (1),
where 0.02≤x≤0.13 and 0.986≤a≤1.02, a first auxiliary component containing Mn, and a second auxiliary component containing trivalent Bi, wherein an amount of the contained Mn is 0.0020 moles or more and 0.0150 moles or less relative to 1 mole of the metal oxide, and an amount of the contained Bi is 0.00042 moles or more and 0.00850 moles or less relative to 1 mole of the metal oxide.
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