Piezoelectric ceramic composition and piezoelectric element using the same
AssigneeMatsushita Electric Industrial Co., Ltd.
InventorsKeiichi Takahashi, Masamitsu Nishida, Hiroshi Sogou
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Abstract
The piezoelectric ceramic composition of the present invention contains, as a main component, a material having a composition represented by Formula: CaMXBi4−xTi4−X(Nb1−ATaA)XO15, where M is at least one element selected from the group consisting of Ca, Sr, and Ba; 0.0≦A≦1.0; and 0.0≦X≦0.6.
Claims16
A piezoelectric ceramic composition comprising, as a main component, a material having a composition represented by Formula:
- CaMXBi4−XTi4−X(Nb1−ATaA)XO15,
- where M is at least one element selected from the group consisting of Ca, Sr, and Ba;
- 0.0≦A≦1.0;
- and 0.0≦X≦0.6.
A piezoelectric ceramic composition comprising, as a main component, a material having a composition represented by Formula:
- CaMYBi4−YTi4−Y(Nb1−BTaB)YO15,
- where M is at least one element selected from the group consisting of Ca, Sr, and Ba;
- 0.0≦B≦1.0;
- and 0.0≦X≦0.6, and comprising WO3 as a subsidiary component.
A piezoelectric element comprising a piezoelectric substance made of a piezoelectric ceramic composition, wherein the piezoelectric ceramic composition contains, as a main component, a material having a composition represented by Formula:
- CaMXBi4−XTi4−X(Nb1−ATaA)XO15,
- where M is at least one element selected from the group consisting of Ca, Sr, and Ba;
- 0.0≦A≦1.0;
- and 0.0≦X≦0.6.
A piezoelectric element comprising a piezoelectric substance made of a piezoelectric ceramic composition, wherein the piezoelectric ceramic composition contains, as a main component, a material having a composition represented by Formula:
- CaMYBi4−YTi4−Y(Nb1−BTaB)YO15,
- where M is at least one element selected from the group consisting of Ca, Sr, and Ba;
- 0.0≦B≦1.0;
- and 0.0≦Y≦0.6, and contains WO3 as a subsidiary component.
Dependencies are inferred from the claim text.