| 摘要 |
The piezoelectric material and piezoelectric element are provided to improve the piezoelectricity/dielectric property including the piezo-electric constant, electromechanical coupling coefficient, machine goods quality element by controlling the content of the CaO / MnO. The raw material including the Bi2O3, Na2 O3, Ba2O5, TiO2, Ca2CO3, MnO is prepared(S100). The first powder is formed by performing the ball milling(S200). In the thermal annealing temperature 700°C - 1000°C after drying, the first powder is sintered to form the second powder(S300). The second powder is molded and the molding product is formed (S400). The piezoelectric element is formed(S500) by increasing the ramp-up rate of 2°C / min or 4°C / min in the sintering temperature 1000°C or 1300°C.
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