摘要:
A piezoelectric thin film element includes a bottom electrode, a piezoelectric layer, and a top electrode on a substrate. The piezoelectric layer includes, as a main phase, a perovskite-type oxide. The bottom electrode has a surface roughness of not more than 0.86 nm in arithmetic mean roughness Ra or not more than 1.1 nm in root mean square roughness Rms. The bottom electrode has a (111) preferential orientation in a direction perpendicular to the substrate.
摘要:
A piezoelectric thin film element includes a bottom electrode, a piezoelectric layer and a top electrode on a substrate. The piezoelectric layer includes as a main phase a perovskite-type oxide represented by (NaxKyLiz)NbO3 (0≦x≦1, 0≦y≦1, 0≦z≦0.2, x+y+z=1), and the bottom electrode includes a surface roughness of not more than 0.86 nm in arithmetic mean roughness Ra or not more than 1.1 nm in root mean square roughness Rms.
摘要翻译:压电薄膜元件包括底电极,压电层和衬底上的顶电极。 压电层包括由(NaxKyLiz)NbO 3(0≦̸ x≦̸ 1,0& nlE; y≦̸ 1,0& nlE; z≦̸ 0.2,x + y + z = 1)表示的钙钛矿型氧化物, 电极包括算术平均粗糙度Ra不大于0.86nm的表面粗糙度或均方根粗糙度Rms不大于1.1nm的表面粗糙度。
摘要:
A piezoelectric thin film element includes a bottom electrode, a piezoelectric layer and a top electrode on a substrate. The piezoelectric layer includes as a main phase a perovskite-type oxide represented by (NaxKyLiz)NbO3 (0
摘要:
A piezoelectric thin film element has a piezoelectric thin film on a substrate, the piezoelectric thin film has a (K1-x,Nax)NbO3thin film expressed by a compositional formula (K1-xNax)NbO3(0
摘要:
A sensor for detecting a physical quantity includes a piezoelectric thin film device having a lower electrode, a piezoelectric thin film and an upper electrode, and a voltage detecting device connected between the lower and upper electrodes of the piezoelectric thin film device. The piezoelectric thin film is formed of an alkali niobium oxide-based perovskite material expressed by (K1-xNax)NbO3 (0
摘要:
A sensor or actuator includes a piezoelectric thin film device including a lower electrode, a piezoelectric thin film and an upper electrode, and a voltage detecting device connected between the lower and upper electrodes of the piezoelectric thin film device. The piezoelectric thin film is formed of an alkali niobium oxide-based perovskite material expressed by (K1-xNax)NbO3 (0
摘要:
A substrate has a first thermal expansion coefficient and a piezoelectric thin film has a second thermal expansion coefficient. The piezoelectric thin film is mainly composed of a potassium sodium niobate (K,Na)NbO3 with a perovskite structure. A curvature radius of a warping of the substrate provided with the piezoelectric thin film due to difference between the first and the second thermal expansion coefficients is 10 m or more at room temperature.
摘要:
A piezoelectric thin film element includes a substrate, a lower electrode, a piezoelectric thin film, and an upper electrode. The lower electrode, the piezoelectric thin film and the upper electrode are formed on the substrate. The piezoelectric thin film includes a polycrystal thin film including crystal grains, an alkali niobium oxide based perovskite structure represented by a general formula: (K1-xNax)NbO3 (0.4
摘要:
A piezoelectric thin film device according to the present invention comprises a lower electrode, a piezoelectric thin film and a upper electrode, in which the piezoelectric thin film is formed of an alkali niobium oxide-based perovskite material expressed by (K1-xNax)NbO3 (0
摘要:
A substrate has a first thermal expansion coefficient and a piezoelectric thin film has a second thermal expansion coefficient. The piezoelectric thin film is mainly composed of a potassium sodium niobate (K,Na)NbO3 with a perovskite structure. A curvature radius of a warping of the substrate provided with the piezoelectric thin film due to deference between the first and the second thermal expansion coefficients is 10 m or more at room temperature.