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Piezoelectric ceramics are known to be used in so-called piezoelectric and reverse piezoelectric effects. Piezoelectric effects lead to the potential of crystals when they are subjected to mechanical vibration. On the contrary, reverse piezoelectric effects lead to the vibration of crystals when they are placed in the electric field. Quartz has long been known as single crystal piezoelectric material in piezoelectric materials. However, the applications of these materials are relatively limited, mainly due to poor crystal stability and limited degree of freedom of quartz properties.
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Later, barium titanate (BaTiO3), a piezoelectric ceramic chip, was introduced into the application of ultrasonic transducer, mainly used in fish detector; ^ Recently, titanate, lead zirconate system (PbTi3bZrO 3) appeared, which has electromechanical conversion efficiency and stability (including temperature characteristics) far superior to existing materials. It greatly broadens the application range of piezoelectric ceramics. When compared with other piezoelectric materials, it has the following advantages:
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_ As a pioneer in piezoelectric ceramic industry, it provides a wide range of piezoelectric applications.