Structural and optical studies of doped potassium-sodium niobate ceramics

Abstract

In the fields of sensors, actuators and ultrasonic gadgets, piezoelectric ceramics based on lead free KNN(1-8) had been brought due to the development in overall performance. The KNN based substances have the gain of low dielectric constants, excessive coupling coefficient and excessive mechanical electricity than lead containing ceramics that cause them to appropriate for excessive frequency transducers. The traits of KNN may be changed through appropriate dopants. (11).Here we use Bi3+ to dop with KNN to change the properties. Structural determinations of all studied solid solutions are completed through XRD and photoluminescence research had been achieved through the usage of spectrophotometer. Optical spectroscopy evaluation has been accomplished for every solid solution. Doping KNN with Bi3+ at concentrations of 0.5 wt%, 1 wt % and 1.5wt%, respectively, improves the optical properties