In 1880, the Curie brothers first discovered the piezoelectric effect on a quartz crystal. It reflects the mutual coupling between the elastic and dielectric properties of piezoelectric crystals. When piezoelectric ceramic crystals are deformed by external forces, they generate different amounts of

Transducer is an important part of sonar. From the perspective of the history of hydroacoustics, every step of the development of underwater acoustics is inseparable from the development of transducer technology. Since hydroacoustic transducers play a key role in underwater acoustic engineering, man

Piezoelectric ceramics crystals are both dielectric and anisotropic dielectrics, so the dielectric properties of piezoelectric crystals are different from those of isotropic dielectrics.The dielectric is polarized under the action of an electric field, and the polarization state is a state in which

As a new material that has emerged in recent years, piezoelectric ceramics are widely used in the manufacture of electronic products and laboratory research. The variation of the dielectric constant of piezoelectric ceramics is closely related to its structural characteristics and polarization mode.

piezoelectric effect and dielectric effect of piezoelectric ceramic The piezoelectric effect is that when some dielectrics are deformed by an external force in a certain direction, polarization occurs inside, and positive and negative opposite charges appear on the two opposite surfaces thereof. Wh