Piezoelectric material piezoelectric element and electronic apparatus
AssigneeCanon Kabushiki Kaisha
InventorsMiki Ueda, Takayuki Watanabe, Shunsuke Murakami
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Abstract
The present invention provides a piezoelectric material not containing lead and potassium, showing satisfactory insulation and piezoelectricity, and having a high Curie temperature. The invention relates to a piezoelectric material includes a main component containing a perovskite-type metal oxide represented by Formula (1): (NaxBa1-y)(NbyTi1-y)O3 (wherein, 0.80≤x≤0.94 and 0.83≤y≤0.94), and an additive component containing at least one element selected from Mn and Ni, wherein the content of the Ni is 0 mol or more and 0.05 mol or less based on 1 mol of the perovskite-type metal oxide, and the content of the Mn is 0 mol or more and 0.005 mol or less based on 1 mol of the perovskite-type metal oxide.
Claims29
A piezoelectric material comprising:
- an oxide containing Na, Ba, Nb, and Ti;
- and
- at least one element selected from Mn and Ni,
- wherein x, which is a molar ratio of Na based on 1 mol of the oxide containing Na, Ba, Nb, and Ti, is in a range of 0.80≤x≤0.92,
- y, which is a molar ratio of Nb based on a sum of numbers of moles of Nb and Ti, is in a range of 0.83≤y≤0.92, and
- a molar ratio of Ba is represented, by use of the value of y, as 1−y, and
- wherein the content of the Ni is 0.05 mol or less based on 1 mol of the oxide containing Na, Ba, Nb, and Ti, and
- the content of the Mn is 0.005 mol or less based on 1 mol of the oxide containing Na, Ba, Nb, and Ti.
Dependencies are inferred from the claim text.