The relationships between the dielectric/pyroelectric properties and the microstructures of the composites B0.7S0.3T1-yNy were investigated by XRD, SEM, EDXA, impedance analyzer and the testing system for measuring pyroelectric current.

• 对两相共存形成的机理；对复相陶瓷材料介电常数的混合法则在B_(0.；7)S_(0