Potassium niobate is a chemical compound with the formula KNbO₃. It is a crystalline material known for its unique properties, including ferroelectricity and piezoelectricity, which make it useful in various applications such as sensors, actuators, and optical devices. This compound can be synthesized through several methods, including solid-state reactions and sol-gel processes. Potassium niobate is also studied for its potential in nonlinear optics, where it can be used to generate new frequencies of light, making it valuable in telecommunications and laser technology.