| 摘要 |
<p>A piezoelectric porcelain which comprises PbA[(Mg1/3Nb2/3)a(Zn1/3Nb2/3)b TicZrd]O3, wherein 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, a s a primary component, and also at least one of Fe, Co, Ni and Cu as a first sub-component in an amount of 0.01 to 0.8 mass % relative to the primary component in terms of an oxide. In the main component, a part of Pb may be replaced by at least one of Ca, Sr and Ba. The piezoelectric porcelain may further comprise at least one of Sb, Nb and Ta as a second sub-component in an amount of 0.05 to 1.0 mass % relative to the primary component in terms of an oxide. The piezoelectric porcelain exhibits enhanced piezoelectric strain constant, and also can be fired at a reduced temperature.</p> |
