KNbO₃, or potassium niobate, is a crystalline compound made up of potassium, niobium, and oxygen. It is known for its unique properties, including piezoelectricity, which allows it to generate an electric charge in response to mechanical stress. This makes it useful in various applications, such as sensors and actuators. In addition to its piezoelectric properties, KNbO₃ is also a ferroelectric material, meaning it can maintain a spontaneous electric polarization. This characteristic is valuable in the production of non-volatile memory devices and optical components, contributing to advancements in electronics and photonics.