| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a piezoelectric ceramic composition having excellent piezoelectric characteristics by the use of a lead-free material. <P>SOLUTION: The piezoelectric ceramic composition is prepared by containing 0.01-3 wt.% at least one or more kinds of Ca, Sr, Zn, Cu, Ba, Mn, Mg, Cr, Fe, Co and Ni expressed in terms of oxide in a composition expressed by [(Na<SB>1-x</SB>K<SB>x</SB>)<SB>0.5</SB>(Bi<SB>1-y</SB>La<SB>y</SB>)<SB>0.5</SB>]TiO<SB>3</SB>+additive and being in a range of 0<x<1 and 0<y≤0.3. <P>COPYRIGHT: (C)2004,JPO&NCIPI |
