| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a technology for obtaining a piezoelectric ceramic composition capable of being fired at a low temperature. <P>SOLUTION: As the powder to be fired, one having 1.8-11.0 cm<SP>2</SP>/g specific surface area is used. As a result, the sintering property is improved and a piezoelectric ceramic having high sintering density and desired piezoelectric characteristics is obtained even if fired at ≤1,050°C, further ≤1,000°C. The piezoelectric ceramic can consist essentially of a component expressed by (Pb<SB>a1</SB>A<SB>a2</SB>)[(Zn<SB>1/3</SB>Nb<SB>2/3</SB>)xTi<SB>y</SB>Zr<SB>z</SB>]O<SB>3</SB>(where, A expresses at least a metal element selected from Sr, Ba and Ca and the atomic ratio satisfies 0.96≤a1+a2≤1.03, 0≤a2≤0.10, x+y+z=1, 0.05≤x≤0.40, 0.1≤y≤0.5 and 0.2≤z≤0.6). <P>COPYRIGHT: (C)2006,JPO&NCIPI |
