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Piezoelectric/electrostrictive ceramics sintered body and method of calculating diffuse scattering intensity ratio
Piezoelectric/electrostrictive ceramics sintered body and method of calculating diffuse scattering intensity ratio
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机译:压电/电致伸缩陶瓷烧结体及其扩散散射强度比的计算方法
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摘要
An alkali niobate-based piezoelectric/electrostrictive ceramics sintered body having a large electric-field-induced strain during application of high electric field is provided. The piezoelectric/electrostrictive ceramics sintered body includes, as a main crystal phase, a perovskite type oxide containing at least one type of element selected from the group consisting of Li, Na and K as A site constituent elements and at least one type of element selected from the group consisting of Nb and Ta as B site constituent elements. The number of lattice-strained layers of the piezoelectric/electrostrictive ceramics sintered body is preferably small. A diffuse scattering intensity ratio, which is a ratio of an intensity of diffuse scattering by a lattice-strained layer present near a domain wall to a sum of an X-ray diffraction intensity of a first lattice plane and that of a second lattice plane different in interplanar spacing from the first lattice plane due to crystallographic symmetry reduction is preferably 0.5 or lower.
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