The Microwave Dielectric Properties of (1-x)Ba$Mg_{1/3}Ta_{2/3}O_{3}-xBa_Co_{1/3}Nb_{2/3})O_{3}(x=0.25~0.5)$ Ceramics

(1-X)Ba$Mg_{1/3}Ta_{2/3}O_{3}-xBa_Co_{1/3}Nb_{2/3})O_{3}(x=0.25~0.5)$세라믹스의 마이크로파 유전특성

The microwave dielectric properties of Ba(Mg$_{1}$3/Ta$_{2}$3/)O$_3$-xBa(Co$_{1}$3/Nb$_{2}$3/)O$_3$[BMT-BCN] ceramics were investigated. The specimens were prepared by the conventional mixed oxide method. It was found that Ba(Mg$_{1}$3/Ta$_{2}$3/)O$_3$ and Ba(Co$_{1}$3/Nb$_{2}$3/)O$_3$ formed a solid solution with complex perovskite structure. Increasing the BCN content, dielectric constant was increased, but temperature coefficient of resonant frequency was decreased. In the range of x$\geq$0.4, dielectric constant was about 30. 0.55BMT-0.45BCN ceramics showed excellent microwave dielectric properties with $\varepsilon$$_{r}$=30.84, Q$\times$f$_{0}$=75,325[GHz] and $\tau$$_{f}$=-2.9015[ppm/$^{\circ}C$].X>].