| abstract |
The disclosed piezoelectric material includes a perovskite-type metal oxide (Na x Ba 1-y )(Nb y Ti 1-y )O 3 , where 0.83≤x≤0.95, 0.85≤y≤0.95, 0.95≤x/y≤1.05, as a main component, at least one of Mn and Ni, and Mg. The Ni content is ≤5 mol%, the Mn content is ≤0.5 mol%, provided that the Mn and Ni contents are not simultaneously 0, and the Mg content is between 0.1 and 2 mol% based on the perovskite-type metal oxide. |