| 摘要 |
<p>Provided are a piezoelectric ceramic and a piezoelectric device having a larger piezoelectric strain constant and capable of being fired at a lower temperature. A main component of PbAÄ(Mg1/3Nb2/3)a(Zn1/3Nb2/3)bTicZrdÜO3 (a+b+c+d=1, 0.99</=A</= 1.01, 0.15</=a+b</=0.5, 0.05</=b</=0.25, 0.2</=c</=0.5, 0.15</=d</=0.6) and 0.01 mass% to 0.8 mass% inclusive of at least one kind selected from the group consisting of Fe, Co, Ni and Cu in the form of oxide per 1 mol of the main component as a first sub-component are comprised. Thereby, a larger piezoelectric strain constant can be obtained, and a firing temperature can be reduced. In the main component, a part of Pb may be replaced with at least one kind selected from the group consisting of Ca, Sr and Ba. Further, as a second sub-component, 0.05 mass% to 1.0 mass% inclusive of at least one kind selected from the group consisting of Sb, Nb and Ta in the form of oxide per 1 mol of the main component may be comprised. <IMAGE></p> |
