Piezoelectric ceramic composition
AssigneeTaiyo Yuden Co., Ltd.
InventorsShinichiro IKEMI, Yutaka DOSHIDA
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Abstract
A piezoelectric ceramic composition contains a perovskite composition which is represented by (Pba.Rex){Zrb.Tic, .(Ni1/3Nb2/3)d.(Zn1/3Nb2/3)e}O3 (wherein Re represents La and/or Nd, and a-e and x satisfy the following conditions 0.95≦a≦1.05, 0≦x≦0.05, 0.35≦b≦0.45, 0.35≦c≦0.45, 0<d≦0.10, 0.07≦e≦0.20 and b+c+d+e=1) and 0.05-0.3% by mass of an Ag component in terms of oxides relative to the perovskite composition.
Claims3
A piezoelectric ceramic composition containing a zirconate-titanate type perovskite composition expressed by Formula (1) below, as well as an Ag component, wherein the Ag component is contained by 0.05 to 0.3 parts by mass per 100 parts by mass of the zirconate-titanate type perovskite composition in terms of oxides:
- (Pba.Rex)(Zrb.Tic.(Ni1/3Nb2/3)d.(Zn1/3Nb2/3)e)O3 (1)
- wherein Re represents La and/or Nd, and a to e and x meet the respective requirements below:
- 0.95≦a≦1.05
- 0≦x≦0.05
- 0.35≦b≦0.45
- 0.35≦c≦0.45
- 0<d≦0.10
- 0.07≦e≦0.20
- b+c+d+e=1
Dependencies are inferred from the claim text.