The Transactions of the Korean Institute of Electrical Engineers C (대한전기학회논문지:전기물성ㆍ응용부문C)

The Korean Institute of Electrical Engineers (대한전기학회)
권호 표지

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

소결온도와 CuO 첨가에 따른 $ZnNb_2O_{6}$ 세라믹스의 마이크로파 유전특성

  • 김정훈 (광운대 대학원 전자재료공학과) ;
  • 김지헌 (광운대 대학원 전자재료공학) ;
  • 배선기 (인천대 공대 전기) ;
  • 이성갑 (서남대 전기전자멀티미디어공학) ;
  • 이영희 (광운대 공대 전자재료공학과)
  • Published : 2004.07.01
Download PDF
⟨ Previous Next ⟩

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

References

  1. W. Wersing, Electronic Ceramics, ED. B. C. H. Steele, Elsevier Applied Science, 67-119, (1991)
  2. H. Kagata, T. Inoue, J. Kato, I. Kameyama, Jpn. J. Appl. Phys., 31 part 1(93), 3152-31 55, (1992) https://doi.org/10.1143/JJAP.31.3152
  3. W. Choi, K. Y. Kim, J. Mater. Res. 13(10), 2945-2949, (1998) https://doi.org/10.1557/JMR.1998.0402
  4. H. J. Lee, I. T. Kim, K. S. Hong, Jpn. J. Appl. Phys., 36 part 2 (10A)
  5. Hirobumi Yamamoto et al., J. Ceram. Soc. Jap., vol.3, p339, (1998)
  6. Yang, C. F., Jpn. J. Appl. Phys., Vol.35, p5389, (1996) https://doi.org/10.1143/JJAP.35.5389
  7. B. W. Hakki et al., 'A Dielectric Resonator Method of Measuring Inductive Capacities in the Millimeter Range', IRE Trans. on Microwave Theory and Techniques, Vol. MTT-24, No.10, (1960)
  8. Y. Kobayashi et al., 'Microwave Measure-ment of Dielectric Properties of Low-Loss Materials by the Dielectric Rod Resonator Method,' IEEE Trans. on Microwave Theory and Techniques, Vol. MTT-33, No.7, (1985)
  9. D. W. Kim, K. H. Ko, K. S. Hong, J. Am. Ceram. Soc., 84(6), 1286-90, (2001) https://doi.org/10.1111/j.1151-2916.2001.tb00830.x