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소결온도에 따른 0.7Ba(Mg,Ta)O$_3$-0.3Ba(Co,Nb)O$_3$세라믹스 마이크로파 유전특성에 관한연구
이문기,김남영,이영희,Lee, Moon-Kee,Kim, Nam-Young,Lee, Young-Hie 대한전기학회 2001 전기학회논문지C Vol.50 No.3
$0.7Ba(Mg{\frac}_{1}{3}Ta{\frac}_{1}{3})O_3-0.3Ba({\frac}_{1}{3}Nb{\frac}_{1}{3})O_3ceramics$ were prepared by the conventional mixed oxide method. The ceramics were sintered at the temperature of $1500{\sim}1575[^{\circ}C]$ for 5 hours in air. The microwave dielectric properties of the specimens were investigated with sintering temperature. The 0.7BMT-0.3BCN ceramics showed typical XRD patterns of the complex perovskite structure. Dielectric constant and quality factor were increased with increasing the sintering temperature. In the case of the specimens sintered at $1575[^{\circ}C]$ for 5 hours, dielectric constant, quality factor and temperature coefficient of resonant frequency were good values of 28,23545 at 10[㎓] and -1.2 $[ppm/^{\circ}C]$, respectively.