| 摘要 |
This invention provides a piezoelectric ceramic composition that does not contain lead, can be sintered at a normal pressure and is excellent in at least one of a piezoelectric constant, an electro-mechanical coupling coefficient, a dielectric loss, a relative dielectric constant and a Curie point, its production method, and a piezoelectric device and a dielectric device each utilizing the piezoelectric ceramic composition. The invention relates to a piezoelectric composition expressed by the general formula {Li<SUB>x</SUB>(K<SUB>1-y</SUB>Na<SUB>y</SUB>)<SUB>1-x</SUB>}(Nb<SUB>1-z</SUB>Sb<SUB>z</SUB>)O<SUB>3</SUB>, each of x, y and z respectively falling within composition ranges of 0<=x<=0.2, 0<=y<=1.0 and 0<=z<=0.2 (with the exception of x=z=0), and its production method. The invention further relates to a piezoelectric device having a piezoelectric body formed of the piezoelectric ceramic composition described above and a dielectric device having a dielectric body formed of the piezoelectric ceramic composition described above.
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