| 摘要 |
A piezoelectric ceramic and a piezoelectric device capable of being fired at a low temperature and improving piezoelectric properties are provided. The piezoelectric ceramic and the piezoelectric device includes Pb<SUB>a</SUB>[(Zn<SUB>b/3</SUB>Nb<SUB>2/3</SUB>)<SUB>x</SUB>Ti<SUB>y</SUB>Zr<SUB>z</SUB>]O<SUB>3 </SUB>(where 0.94<=a<=1.02, 1<b<=3, x+y+z=1, 0.05<=x<0.125, 0.275<y<=0.5, 0.375<z<=0.6) OR (PB<SUB>e.f</SUB>Me<SUB>f</SUB>)[(Zn<SUB>g/3</SUB>Nb<SUB>2/3</SUB>)<SUB>u</SUB>Ti<SUB>v</SUB>Zr<SUB>w</SUB>]O<SUB>3 </SUB>(where 0.96<=e<=1.03, 0.01<=f<=0.1, 1<g<=3, u+v+w=1, 0.05<=u<0.125, 0.275<v<=0.5, 0.375<w<=0.6, and Me indicates Sr, Ba or Ca). When an excessive amount of Zn is included, the firing temperature can be lower, and the piezoelectric properties can be improved.
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