Piezoelectric ceramic composition
AssigneeKonica Minolta Holdings, Inc.
InventorsShingo Uraki, Ryo Suzuki, Takaaki Tsurumi
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Abstract
Disclosed is a piezoelectric ceramic composition which is produced by adding two or more metal elements and has excellent piezoelectric properties. The piezoelectric composition comprises the main ingredient represented by the general formula: [Lix(K1-yNay)1-x](Nb1-z-wTaZSbw)O3 (0≦x≦0.2, 0≦y≦1, 0≦z≦0.4, 0<w≦0.2) and the auxiliary ingredient represented by the general formula: ABO3 (wherein A and B independently represent a metal element having a valence of +3 or together represent a combination of at least two metal elements each having a valence of +3 in average; and ABO3 represents a compound having a perovskite structure).
Claims3
A piezoelectric ceramic composition comprising a primary ingredient represented by Formula 1 and an auxiliary ingredient represented by Formula 2,
- [LiX(K1-YNaY)1-X]a[Nb1-Z-WTaZSbW)]bO3, Formula 1
- wherein 0≦X≦0.2, 0≦Y≦1, 0<Z≦0.4, and 0<W≦0.2, 0.95≦a≦1.05, 0.95≦b≦1.05,
- ABO3, Formula 2
- wherein A represents a metal element having a valence of +3 or a combination of metal elements having a valence of +3 on average, and B represents a metal element having a valence of +3 or a combination of metal elements having a valence of +3 on average, and ABO3 represents a compound having a perovskite structure;
- and the amount of an auxiliary ingredient is less than 1 mol % per 100 mol % of a piezoelectric ceramic composition after an auxiliary ingredient has been added.
Dependencies are inferred from the claim text.