| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a novel, environmentally friendly piezoelectric ceramic which is completely lead-free and is excellent in piezoelectric property. <P>SOLUTION: This piezoelectric solid solution composition is represented by the general formula: ä(Ba<SB>e</SB>Sr<SB>f</SB>Ca<SB>g</SB>Mg<SB>h</SB>)<SB>x</SB>(Na<SB>y</SB>K<SB>1-y</SB>)<SB>1-x</SB>}ä(Ti<SB>1-z-w</SB>Zr<SB>z</SB>Hf<SB>w</SB>)<SB>x</SB>(Nb<SB>1-u-v</SB>Ta<SB>u</SB>Sb<SB>v</SB>)<SB>1-x</SB>}O<SB>3</SB>(wherein e, f, g, h, x, y, z, u, v and w satisfy the relations: 0≤e≤1, 0≤f≤1, 0≤g≤1, 0≤h≤1, e+f+g+h=1, 0<f+g+h<0.05 or 0.2<f+g+h≤1, 0<x≤0.2, 0≤y≤1, 0≤z≤1, 0≤u≤0.5, 0≤v≤0.4, 0≤w≤1, z+w≤1 and (1-e)(1-f)(1-g)(1-h)+u+v+w+z>0). The piezoelectric ceramic is obtained by sintering the same. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
