PMNT (Lead Magnesium Niobate-Lead Titanate) is a mixed oxide material that is commonly used as a substrate in the field of piezoelectric and electro-optic devices. It has a unique combination of electrical, optical, and mechanical properties that make it suitable for applications in areas such as sensors, filters, modulators, and actuators. PMNT has a high piezoelectric response, high dielectric constant, low loss, and good mechanical stability, making it ideal for use in high-frequency and high-temperature applications. The PMNT substrates are usually synthesized through solid-state reaction or solution deposition methods, and they are available in various sizes and shapes to meet different application requirements.