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http://dx.doi.org/10.4313/JKEM.2002.15.10.870

Microwave Dielectric Properties of BZCT Ceramics  

이문기 (광운대학교 전자재료공학과)
최의선 (광운대학교 전자재료공학과)
류기원 (여주대학 전자과)
이영희 (광운대학교 전자재료공학과)
Publication Information
Journal of the Korean Institute of Electrical and Electronic Material Engineers / v.15, no.10, 2002 , pp. 870-875 More about this Journal
Abstract
Ba(Zn$_1$-xCox)TaO$_3$[BZCT] ceramics were Prepared by the conventional mixed oxide method. The ceramics were sintered at the temperature of 1450∼1550$\^{C}$ for 5 hr in air. The crystal structure of BZCT ceramics was investigated by the XRD. The microstructure of the specimens were observed by SEM. The structural properties of BZCT specimens were investigated as a function of composition and sintering temperature. All BZCT ceramics sintered over 1550$\^{C}$ were showed a polycrystalline complek perovskite structure without second phases and any unreacted materials. The density of BZCT (70/30) specimen sintered at 1550$\^{C}$ was 6.31g/㎤. In the case of the BZCT(70/30) ceramics sintered at 1550$\^{C}$ for 5 hours, dielectric constant, qualify factor and temperature coefficient of resonant frequency for microwave dielectrics application were a good value of 29, 16,468 at 10㎓ and -4.4 ppm/$\^{C}$, respectively.
Keywords
BZCT; Complex perovskite structure; Microwave dielectric properties;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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