| 摘要 |
PROBLEM TO BE SOLVED: To provide an alkali metal-containing niobium oxide piezoelectric material that has the sintering properties that can give sintered products through the known sintering method under normal pressure, the temporal stability and temperature stability. SOLUTION: A compound including Cu is added to a solid solution that is constituted with the formula: K1-xNaxNbO3 (x =0-0.8) so that the amount of Cu element may be 0.001-5 mol.% to produce a high piezoelectric material with good sintering behavior and high piezoelectric properties. In another case, the addition of 10 mol.% of Li and 20 mol.% of Ta to a solid solution that is represented by the formula: Lix(K1-y)Nay)1-x(Nb1-zTaz)O3 (x=0.001-0.2, y=0-0.8, z=0-0.4) gives a material having high temperature properties. These piezoelectric materials can be prepared by conventional sintering process under normal pressure. |
