| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a crystallographic orientation ceramic which can demonstrate excellent piezoelectric characteristics, and its manufacturing method, as well as a piezoelectric material using the crystallographic orientation ceramic, a dielectric material, a thermoelectric element, and an ionic conductive element. <P>SOLUTION: The crystallographic orientation ceramic has as the main phase an isotropic perovskite compound represented by general formula (1): äLi<SB>x</SB>(K<SB>1-y</SB>Na<SB>y</SB>)<SB>1-x</SB>}(Nb<SB>1-z-w</SB>Ta<SB>z</SB>Sb<SB>w</SB>)O<SB>3</SB>, wherein x, y, z and w are each within the composition range of 0≤x≤0.2, 0≤y≤1, 0≤z≤0.4, 0≤w≤0.2, and x+z+w>0, respectively. The main phase consists of a polycrystal containing one or more kinds of additive elements of 0.0001-0.15 mol selected from among a metallic element belonging to group II-XV in the periodic table, a metalloid element, a transition metal element, a noble metal element, and an alkaline earth metal element to a compound represented by general formula (1) of 1 mol. Specific crystal faces of each crystal grain composing the polycrystal are oriented. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
