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Physical and Microwave Dielectric Properties of the MgO-SiO2 System

  • Yeon, Deuk-Ho (Department of Materials Science and Engineering, Yonsei University) ;
  • Han, Chan-Su (Department of Materials Science and Engineering, Yonsei University) ;
  • Key, Sung-Hoon (Department of Materials Science and Engineering, Yonsei University) ;
  • Kim, Hyo-Eun (Department of Materials Science and Engineering, Yonsei University) ;
  • Kang, Jong-Yun (Thin Film Materials Research Center, Korea Institute of Science and Technology) ;
  • Cho, Yong-Soo (Department of Materials Science and Engineering, Yonsei University)
  • Published : 2009.10.27

Abstract

Unreported dielectrics based on the binary system of MgO-SiO$_2$ were investigated as potential candidates for microwave dielectric applications, particularly those demanding a high fired density and high quality factors. Extensive dielectric compositions having different molar ratios of MgO to SiO$_2$, such as 2:1, 3:1, 4:1, and 5:1, were prepared by conventional solid state reactions between MgO and SiO$_2$. 1 mol% of V$_2$O$_5$ was added to aid sintering for improved densification. The dielectric compositions were found to consist of two distinguishable phases of Mg$_2$SiO$_4$ and MgO beyond the 2:1 compositional ratio, which determined the final physical and dielectric properties of the corresponding composite samples. The increase of the ratio of MgO to SiO$_2$ tended to improve fired density and quality factor (Q) without increasing grain size. As a promising composition, the 5MgO.SiO$_2$ sample sintered at 1400 $^{\circ}C$ exhibited a low dielectric constant of 7.9 and a high Q $\times$ f (frequency) value of $\sim$99,600 at 13.7 GHz.

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References

  1. S. J. Kim and E. S. Kim, Kor. J. Mater. Res., 17, 442 (2007). https://doi.org/10.3740/MRSK.2007.17.8.442
  2. R. J. Cava, J. Mater. Chem., 11, 54 (2001). https://doi.org/10.1039/b003681l
  3. I. M. Reaney and D. Iddles, J. Am. Ceram. Soc., 89, 2063 (2006). https://doi.org/10.1111/j.1551-2916.2006.01025.x
  4. H. Ohsato, J. Ceram. Soc. Jpn., 113, 703 (2005). https://doi.org/10.2109/jcersj.113.703
  5. K. X. Song and X. M. Chen, Mater. Lett., 62, 520 (2008). https://doi.org/10.1016/j.matlet.2007.05.078
  6. G. W. Brindley and R. Hayami, Philos. Mag., 12, 505 (1965). https://doi.org/10.1080/14786436508218896
  7. T. Sugiyama, T. Tsunooka, K. Kakimoto and H. Ohsato, J. Eur, Ceram. Soc., 26, 2097 (2006). https://doi.org/10.1016/j.jeurceramsoc.2005.09.102
  8. K. X. Song, X. M. Chen and X. C. Fan, J. Am. Ceram. Soc., 90, 1808 (2007). https://doi.org/10.1111/j.1551-2916.2007.01656.x
  9. K. P. Surendram, P. V. Bijumon, P. Mohanan and M. T. Sebastian, Appl. Phys. A., 81, 823 (2005). https://doi.org/10.1007/s00339-005-3282-5
  10. V. M. Ferreia, F. Azough, J. L. Baptista and R. Freer, Ferroelectrics, 133, 127 (1992). https://doi.org/10.1080/00150199208217987
  11. J. Sugihara, K. Kakimoto, I. Kagomiya and H. Ohsato, J. Eur, Ceram. Soc., 27, 3105 (2007). https://doi.org/10.1016/j.jeurceramsoc.2006.11.032
  12. K. X. Song, X. M. Chen and C. W. Zheng, Ceram. Int., 34, 917 (2008). https://doi.org/10.1016/j.ceramint.2007.09.057
  13. H. Ohsato, T. Tsunooka, M. Ando, Y. Ohishi, Y. Miyauchi and K. Kakimoto, J. Kor. Ceram. Soc., 40, 350 (2003). https://doi.org/10.4191/KCERS.2003.40.4.350
  14. S. T. Lee, Y. H. Jo, H. E. Kim, D. H. Youn, I. J. Choi, S. H. Key, C. Y. Kang, W. S. Hong and Y. S. Cho, Adv. Appl. Ceram. (DOI: 10.1179, in press).
  15. A. Saberi, B. Alinejad, Z. Negahdari, F. Kazemi and A. Almasi, Mater. Res. Bull., 42, 666 (2007). https://doi.org/10.1016/j.materresbull.2006.07.020
  16. S. Sano, N. Saito, S. Matsuda, N. Ohashi, H. Haneda, Y. Arita and M. Takemoto, J. Am. Ceram. Soc., 89, 568 (2006). https://doi.org/10.1111/j.1551-2916.2005.00766.x
  17. B. W. Hakki and P. D. Coleman, IRE Trans. Microwave Theory Tech., MTT-8, 402 (1960). https://doi.org/10.1109/TMTT.1960.1124749
  18. A. V. Gropyanov and V. M. Gropyanov, Refract. Ind. Ceram., 42, 162 (2001). https://doi.org/10.1023/A:1011392331809
  19. S. M. Zubakov, P. N. Babin and A. K. Akishev, Refract. Ind. Ceram., 20, 311 (1979).