TEMPERATURE-STABLE DIELECTRIC CERAMICS IN BA4ND2TI4TA6O30/(LA0.1BI0.9)2TI2O7 BIPHASE SYSTEM

Biphase dielectric ceramics in the system of (1 − x)Ba4Nd2Ti4Ta6O30/ x(La0.1Bi0.9) 2Ti2O7 were investigated to obtain a near-zero temperature coefficient of dielectric constant. With the increase in x, the dielectric constant increased slightly, and the temperature coefficient changed from negative to positive. High dielectric constant of e = 143 and good temperature stabibility (τ e = −48 ppm/ °C) were achieved in a composition of x = 0.45, and the increased dielectric loss became the new problem.