PZT-4 piezoelectric ceramics

Transceiver material PZT-4 piezoelectric ceramics 

The piezoelectric ceramic material is interposed between the PZT-8 and PZT-5, taking into account both the characteristics of high sensitivity, but also has a low dielectric loss, the transmission power is small and can be done simultaneously both the receiving transceiver with a transducer, choose the most suitable of the material. 

PZT piezoelectric ceramic (lead zirconate titanate): where P is the abbreviation of Pb Pb, Z is the abbreviation of zirconium elements Zr, T is the titanium Ti abbreviations. 

PZT piezoelectric ceramic is lead dioxide, lead zirconate, lead titanate sintered at 1200 degrees high temperature polycrystalline. The piezoelectric effect has a positive and negative electrical effects. 
PZT-4 piezoelectric ceramics
PZT is a solid solution of PbZrO3 and PbTiO3, having a perovskite structure. PbTiO3 and PbZrO3 is typical ferroelectric and antiferroelectric substance, since the Ti and Zr belonging to the same sub-group, PbTiO3, and PbZrO3 similar space lattice form, but macroscopic properties there is a huge difference between the two, titanium lead acid for ferroelectric Curie temperature of 492 ℃, and lead zirconate is anti-ferroelectric Curie temperature of 232 ℃, such a big difference caused widespread concern. 

After studying the solid solution of PbZrO3 and PbTiO3 found more excellent than the other PZT ferroelectric, piezoelectric and dielectric properties, PZT and doped PZT ferroelectric ceramics series of studies in recent years become the focus. 

Piezoelectric ceramic (piezoelectric ceramics), also known as transducers piece of technology in the field of modern electronics indispensable important part of piezoelectric ceramics in modern communications, radar, sonar, automatic measurement and control, ultrasonic transducers, ignition detonation , ultrasonic sterilization, ultrasonic power, etc. are widely used. 

Piezoelectric ceramics are ceramic piezoelectric effect, called piezoelectric ceramics. 

It has a peculiar characteristics of the piezoelectric effect, i.e., when subjected to slight external force, the mechanical energy into electrical energy can, when combined with the alternating voltage, electrical energy into mechanical energy and will. It is usually several oxides or carbonates are formed in the sintering process occurs by the reaction of the solid phase, its manufacturing process is similar to an ordinary electronic ceramics. 

Out of the sintered body is a polycrystalline ceramic, which is a disorder of orientation of spontaneous polarization of the ferroelectric is the main component, so called ferroelectric ceramics, no piezoelectric properties. 
Now China has developed in the field of piezoelectric ceramic materials and their applications are still in the development stage, the development of this industry will have broad prospects.

PZT-4 piezoelectric ceramics