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The Microwave Dielectric Properties of $ZnNb_2O_{6}$ Ceramics with Sintering Temperature and CuO Addition  

김정훈 (광운대 대학원 전자재료공학과)
김지헌 (광운대 대학원 전자재료공학)
배선기 (인천대 공대 전기)
이성갑 (서남대 전기전자멀티미디어공학)
이영희 (광운대 공대 전자재료공학과)
Publication Information
The Transactions of the Korean Institute of Electrical Engineers C / v.53, no.7, 2004 , pp. 347-351 More about this Journal
Abstract
The $ZnNb_2O_{6}$ ceramics with CuO(1, 3, 5wt%) were prepared by the conventional mixed oxide method. The ceramics were sintered at the temperature of $950^{\circ}C$∼$1075^{\circ}C$ for 3hr in air The structural properties and the microwave dielectric properties of $ZnNb_2O_{6}$ ceramics were investigated with sintering temperature and the addition of CuO. Increasing the addition of CuO, the peak of second phase($Cu_3Nb_2O_{8}$) was increased. The grain size of the $ZnNb_2O_{6}$ ceramics with CuO was increased with CuO addition at same temperature. The dielectric constant of $ZnNb_2O_{6}$ ceramics with CuO was increased with sintering temperature and CuO addition. While the quality factor of the $ZnNb_2O_{6}$ ceramics with lwt% CuO depended on sinterability, the quality factor of $ZnNb_2O_{6}$ with 3wt% and 5wt% CuO depended on second Phase due to the CuO addition. The optimum dielectric Properties of $\varepsilon$$_{r}$ = 21.73 Q${\times}$f = 19,276 were obtained from the condition of 3wt% CuO addition and sintering temperature of $1025^{\circ}C$(3hr).
Keywords
Dielectric constant; Quality factor; $ZnNb_2O_{6}$; CuO; Sintering temperature;
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