| 摘要 |
Provided is a composition of piezoelectric ceramics sintered at a low temperature and being superior in piezoelectric properties to be applied to a multi layer piezoelectric transformer. The composition of piezoelectric ceramics is prepared by adding Pb[(Mn1/3Nb2/3)O3 - Pb(Zn1/3Nb2/3)O3 - Pb(Zr, Ti)O3 with at least one of Li2CO3, Bi2O3, and CuO. Preferably, the Pb[(Mn1/3Nb2/3)0.07 (Zn1/3Nb2/3)a(Zr0.48Ti0.52)1-0.07-aO3] + xwt.%Li2CO3 + ywt.%Bi2O3 + zwt.%CuO, wherein a is a value between 0.02 and 0.16, x is a value between 0 and 3, y is a value between 0 and 3, and z is a value between 0 and 3, x, y, and z not being zero. Li2CO3, Bi2O3, and CuO are used as a sintering additive for low-temperature sintering of the composition.
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