摘要:
A piezoelectric ceramic 10 composed mainly of a three-component solid solution represented by the following general formula (1), wherein x, y and z in general formula (1) satisfy the following formulas (2), (3), (4) and (5). x(Bi1/2Na1/2)TiO3−y(Bi1/2Li1/2)TiO3−z(Bi1/2K1/2)TiO3 (1) 0.80≦x≦0.96 (2) 0.02≦y≦0.08 (3) 0.01≦z≦0.15 (4) x+y+z=1 (5)
摘要:
A piezoelectric ceramic 10 composed mainly of a three-component solid solution represented by the following general formula (1), wherein x, y and z in general formula (1) satisfy the following formulas (2), (3), (4) and (5). x(Bi1/2Na1/2)TiO3-y(Bi1/2Li1/2)TiO3-z(Bi1/2K1/2)TiO3 (1) 0.80≦x≦0.96 (2) 0.02≦y≦0.08 (3) 0.01≦z≦0.15 (4) x+y+z=1 (5)
摘要:
A piezoelectric composition includes a compound represented by a general expression Bi4Ti3O12—SrBi4Ti4O15 as a main component; and Mn or a Mn compound as an additive. A Mn content is less than 1.0% by mass based on a main component amount.
摘要:
A piezoelectric ceramic composition including a perovskite-type oxide, wherein the perovskite-type oxide has Na, K, Li, Ba and Sr at the A site and Nb, Ta and Zr at the B site, and has a crystal phase transition in a temperature range of −50 to 150° C., the crystal phase transition being accompanied by an endotherm of no greater than 4 J/g, as well as a piezoelectric element 20 provided with a piezoelectric ceramic 1 that contains the piezoelectric ceramic composition.
摘要:
According to a preferred embodiment, the piezoelectric ceramic includes a complex oxide having the composition represented by formula (1) or (2), and Mn at 0.2-1.2 mass % or 0.2-3 mass %, respectively, in terms of MnCO3. (Pb1-aA1a)TixZr1-x-y-z-b(Zn1/3A22/3)y(Yb1/2A21/2)zSnbO3 (1) (Pb1-aA1a)TixZr1-x-y-b(Zn1/3A22/3)ySnbO3 (2) [In formula (1), A1 represents at least one element selected from the group consisting of Ca, Sr and Ba, and A2 is at least one element selected from the group consisting of Nb, Ta and Sb, and includes at least Nb. In formula (2), A1 represents at least one element selected from among Ca, Sr and Ba, A2 represents at least one element selected from among Nb and W, and A2 includes at least Nb.]
摘要:
A piezoelectric ceramic composition including a perovskite-type oxide, wherein the perovskite-type oxide has Na, K, Li, Ba and Sr at the A site and Nb, Ta and Zr at the B site, and has a crystal phase transition in a temperature range of −50 to 150° C., the crystal phase transition being accompanied by an endotherm of no greater than 4 J/g, as well as a piezoelectric element 20 provided with a piezoelectric ceramic 1 that contains the piezoelectric ceramic composition.
摘要:
According to a preferred embodiment, the piezoelectric ceramic includes a complex oxide having the composition represented by formula (1) or (2), and Mn at 0.2-1.2 mass % or 0.2-3 mass %, respectively, in terms of MnCO3. (Pb1-aA1a)TixZr1-x-y-z-b(Zn1/3A22/3)y(Yb1/2A21/2)zSnbO3 (1) (Pb1-aA1a)TixZr1-x-y-b(Zn1/3A22/3)ySnbO3 (2) [In formula (1), A1 represents at least one element selected from the group consisting of Ca, Sr and Ba, and A2 is at least one element selected from the group consisting of Nb, Ta and Sb, and includes at least Nb. In formula (2), A1 represents at least one element selected from among Ca, Sr and Ba, A2 represents at least one element selected from among Nb and W, and A2 includes at least Nb.]
摘要:
Provided is a piezoelectric ceramic 1 containing a compound represented by the following general formula (1), as a main component and at least one element selected from Mn, Fe and Cu in an amount of 0.04 to 0.6% by mass based on the main component, and a vibrator 10 having the piezoelectric ceramic 1 and electrodes 2, 3. CaxBa1−xTiO3 (1) where, x satisfies 0.05≦x≦0.20.
摘要:
The piezoelectric element 20 of the invention comprises a pair of electrodes 2,3 and a piezoelectric ceramic 1 comprising as the major component a solid solution of the two components KNbO3 and BaTiO3. In the solid solution, the molar ratio of KNbO3 is 0.5-0.9 with respect to the total of the two components.
摘要:
The piezoelectric element 20 of the invention comprises a pair of electrodes 2,3 and a piezoelectric ceramic 1 comprising as the major component a solid solution of the two components KNbO3 and BaTiO3. In the solid solution, the molar ratio of KNbO3 is 0.5-0.9 with respect to the total of the two components.