Effect of Temperature on Dielectric Parameters of Ferroelectric Materials at Microwave Frequency

Abstract

The composite materials of ST & BT ceramics were prepared by using solid state reaction method. The dielectric parameters of ST & BT ceramics of particle size 125 micron like dielectric constant (ε'), loss (ε"), quality factor (QxF), relaxation time (τ) and conductivity (σ) has been studied at different temperatures i.e. -10°C, +10°C, +30°C and +50°C. the values of dielectric parameters are found greeter of ST then BT but the relaxation time of ST is found smaller than BT.