| abstract |
The present invention provides crystal oriented ceramics, and a production method of the same, having a basic composition of isotropic perovskite-based potassium sodium niobate, demonstrating superior piezoelectric characteristics, and having a specific crystal plane oriented to a high degree of orientation. The crystal oriented ceramics as claimed in the present invention is composed of a polycrystalline substance of an isotropic perovskite compound represented by the general formula: {Li x (K 1-y Na y ) 1-x }{Nb 1-z-w Ta z Sb w }O 3 (wherein, 0 x 0.2, 0 y 1, 0 z s 0.4, 0 s w 0.2, x + z + w > 0), and a specific crystal plane of each crystal grain that composes said polycrystalline substance is oriented. nSuch crystal oriented ceramics are obtained by molding a mixture of a first anisotropic shaped powder, for which the growth plane has lattice coherency with a specific crystal plane of the isotropic perovskite compound to be produced, and a first reaction raw material, so that the first anisotropic shaped powder is oriented, followed by heating. |