Comparison of piezoelectric ceramic crystals and why they have polarity

1. Piezoelectric ceramic materials, can their parameters be changed?

For piezoelectric ceramic materials, in general, the parameters of piezo ceramic polarity are constant rather than changing with conditions. However, it should be noted that the thickness and diameter of the piezoelectric ceramic have a certain influence on the dielectric constant and elastic stiffness of the piezoelectric ceramic, sometimes, this cannot be taken into consideration.

2. Is the crystal of a piezoelectric ceramic different from a quartz crystal?

The crystal oscillator of a Pzt piezoelectric ceramics and a quartz crystal oscillator are compared in terms of the two, and there are certain differences, and the two are mainly in the accuracy and temperature stability. Moreover, relatively speaking, the accuracy of the quartz crystal oscillator can reach six decimal places, and its unit is ppm.

3. Piezoelectric ceramics, why is it polar?

Piezoelectric ceramics have a reason for their polarity because when the piezo ceramic transducers are stressed, the two surfaces have a charge buildup, thereby generating a certain voltage. Since the molecules are polar, they are divided into positive and negative electrodes. In the macroscopic view, it is the accumulation of electric charges, and in turn, the piezoelectric ceramics have positive and negative electrodes.