Piezoelectric material, piezoelectric element, and electronic apparatus

摘要

The present invention provides a piezoelectric material not containing lead and potassium, showing satisfactory insulation and piezoelectricity, and having a high Curie temperature. The invention relates to a piezoelectric material includes a main component containing a perovskite-type metal oxide represented by Formula (1): (NaxBa1-y)(NbyTi1-y)O3 (wherein, 0.80≦x≦0.94 and 0.83≦y≦0.94), and an additive component containing at least one element selected from Mn and Ni, wherein the content of the Ni is 0 mol or more and 0.05 mol or less based on 1 mol of the perovskite-type metal oxide, and the content of the Mn is 0 mol or more and 0.005 mol or less based on 1 mol of the perovskite-type metal oxide.

主权项

1. A piezoelectric material comprising:
a main component comprising a perovskite-type metal oxide represented by Formula (1): (NaxBa1-y)(NbyTi1-y)O3 (wherein, 0.80≦x≦0.94 and 0.83≦y≦0.94), and an additive component comprising at least one element selected from Mn and Ni, wherein the content of the Ni is 0 mol or more and 0.05 mol or less based on 1 mol of the perovskite-type metal oxide; and the content of the Mn is 0 mol or more and 0.005 mol or less based on 1 mol of the perovskite-type metal oxide (provided that both the content of Mn and the content of Ni are not simultaneously 0 mol) wherein a relative dielectric constant of the piezoelectric material is 200 or more and 1090 or less, and wherein a resistivity of the piezoelectric material is 44 GΩ·cm or more and 3250 GΩ·cm or less.