| 简介 |
There is provided a lead- and potassium-free piezoelectric material having a high piezoelectric constant and a satisfactory insulation property and a piezoelectric element that includes the piezoelectric material. The piezoelectric material contains a perovskite-type metal oxide having the general formula (1) : (NaxBa1-y)(NbyTi1-y)O3 (wherein x satisfies 0.80 ≤ x ≤ 0.95, and y satisfies 0.85 ≤ y ≤ 0.95); and at least one rare-earth element selected from La, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, and Lu, wherein the rare-earth element content is more than 0 mol% and 5 mol% or less of the amount of perovskite-type metal oxide. The piezoelectric element includes the piezoelectric material. |
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