Piezoelectric ceramics are materials that generate an electric charge when mechanically stressed. This property is due to their unique crystal structure, which allows them to convert mechanical energy into electrical energy and vice versa. Commonly used in sensors and actuators, these ceramics play a crucial role in various applications, including ultrasonic devices and microphones. The most widely used piezoelectric ceramic is lead zirconate titanate (PZT), known for its strong piezoelectric effect. These materials are often used in everyday devices, such as speakers and vibrating motors, making them essential in modern technology.