DOI QR코드

DOI QR Code

Microwave Dielectric Properties of the 0.7Mg4Ta2O9-0.3SrTiO3 Ceramics with Sintering Temperature

소결온도에 따른 0.7Mg4Ta2O9-0.3SrTiO3 세라믹스의 마이크로파 유전특성

  • 김재식 (광운대학교 전자재료공학과) ;
  • 최의선 (광운대학교 전자재료공학과) ;
  • 이문기 (광운대학교 전자재료공학과) ;
  • 이영희 (광운대학교 전자재료공학과) ;
  • 배선기 (인천대학교 전기공학과)
  • Published : 2005.06.01

Abstract

The structural and microwave dielectric properties of $0.7Mg_4Ta_2O_9-0.3SrTiO_3$ ceramics with sintering temperature were investigated. All the sample of the $0.7Mg_4Ta_2O_9-0.3SrTiO_3$ ceramics were prepared by conventional miked oxide method and the sintering temperature was $1425\~1500^{\circ}C$. The hexagonal phase of $Mg_4Ta_2O_9$ and the cubic phase of $SrTiO_3$ were coexisted. The porosity of $0.7Mg_4Ta_2O_9-0.3SrTiO_3$ ceramics were reduced with increasing sintering temperature. In the case of $0.7Mg_4Ta_2O_9-0.3SrTiO_3$ ceramics sintered at $1475^{\circ}C$, dielectric constant, quality factor and temperature coefficient of resonant frequency were 14.51, 82,596 GHz and $-3.14\;ppm/^{\circ}C$, respectively.

References

  1. 윤종락, 이석원, 이헌용, '고주파 유전체를 이용한 고주파 통신용 부품', 전기전자재료학회논문지, 10권, 5호, .p 492, 1997
  2. N. Negas, G. Yeager, S. Bell, and R. Amren, 'Chemistry and properties of temperature compensated microwave dielectric', NIST spec. publ. 804, in Chemistry of Electronic Ceramic Materials, Vol. 10, No.2, p. 21, 1991
  3. W. S. Kim, K. H. Yoon, E. S. Kim, and K. H. Joe, 'Effect of $WO_3$ on microwave dielectric properties of $BaO-Nd_2O_3-4TiO_2$ system', J. Kor. Pyhs. Soc., Vol. 32, No.2, p. 374, 1998
  4. K. Wakino, T. Minai, and H. Ichimura, 'Microwave characteristics of $(Zr,Sn)TiO_4$ and BaO-PbO-$Nd_2O_3$-$TiO_2$ dielectric resonators', J Am. Ceram. Soc., Vol. 67, No.8, p. 278, 1984
  5. 최의선, 이성갑, 배선기, 이영희, '소결온도에 따른 $(1-x)MgTiO_3-xSrTiO_3(x=0.02{\sim}0.08)$ 세라믹스의 마이크로파 유전특성', 전기전자재료학회논문지, 13권, 12호, p. 1011, 2000
  6. 김재식, 최의선, 이문기, 배선기, 이영희, '$H_3BO_3-SnO$ 첨가에 따른 $0.6TiTe_3O_8-0.4MgTiO_3$ 세라믹스의 마이크로파 유전 특성', 전기전자재료학회논문지, 18권, 1호, p. 57, 2005 https://doi.org/10.4313/JKEM.2005.18.1.057
  7. M. Onoda, '$Ba(Zn_{1/3}Nb_{2/3})O_3-Sr(Zn_{1/3}Nb_{2/3})O_3$ solid solution ceramics with temperaturestable high dielectric constant and low microwave loss', Jpn, J. Appl, Phys., Vol. 21, No. 12, p. 1707, 1982 https://doi.org/10.1143/JJAP.21.1707
  8. J M. Wu, 'Reaction sequence and effect of calcination and sintering on microwave properties of $(Ba,Sr)O-Sm_2O_3-TiO_2$ ceramics ', J. Am. Ceram. Soc., Vol. 73, No.6, p. 1599, 1990 https://doi.org/10.1111/j.1151-2916.1990.tb09802.x
  9. P. L. Wise, I. M. Reaney, W. E. Lee, T. J Price, D. M. Iddles, and D. S. Cannel, 'Structure-microwave property relations in $(Sr_xCa_{(1-x)})_{n+1}Ti_nO_{3n+1}$', J. Eur. Cer Soc., Vol. 21, Iss. 10-11, p. 1723, 2001
  10. B. W. Hakki, 'A dielectric resonator method of measuring inductive capacities in the millimeter range', IRE Trans. on Microwave Theory and Techniques, Vol. MTT-24, No. 10, p. 402, 1960
  11. Y. Kobayashi, 'Microwave measurement 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, p. 586, 1985