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Jpn. J. Appl. Phys. 34 (1995) pp. 187-191  |Next Article|  |Table of Contents|
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Microwave Dielectric Properties and Structure of the Ba6-3xSm8+2xTi18O54 Solid Solutions

Hitoshi Ohsato, Toshiyuki Ohhashi, Hiromichi Kato, Susumu Nishigaki1, Takashi Okuda

Department of Materials Science and Engineering, Nagoya Institute of Technology, Gokiso-cho, Showa-ku, Nagoya 466, Japan ^1Sumitomo Metal Ceramics Inc., 3 Denjiyama, Narumi-cho, Midori-ku, Nagoya 458, Japan

(Received July 27, 1994; accepted for publication October 15, 1994)

The microwave dielectric properties of the Ba6-3 xSm8+2 xTi18O54 (0.3≤x≤0.7) solid solutions are studied in relation to the crystal structure. Q·f of suitable materials obtained by optimizing the sintering condition is in inverse proportion to the dielectric constant (εr). With increase of x, εr decreased and Q·f increased. Good-quality microwave resonators with εr=80 and Q·f=9720 GHz can be obtained in the composition range of x=0.5 to 0.7 in the solid-solution region. Substitution of 2Sm3+ for 3Ba2+ in the large cation sites results in the creation of vacancies and crystal distortion, showing that the shrinkage of the TiO6 octahedral site plays an important role for improvement of the microwave dielectric properties.

URL: http://jjap.jsap.jp/link?JJAP/34/187/
DOI: 10.1143/JJAP.34.187


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References | Citing Articles (39)

  1. S. Nishigaki: FC Rep. 5 (1987) 413. Translation: FC Annu. Rep. Overseas Readers (1988) 32.
  2. H. Ohsato, S. Nishigaki and T. Okuda: Jpn. J. Appl. Phys. 31 (1992) 3136[JSAP].
  3. H. Ohsato, T. Ohhashi, S. Nishigaki, T. Okuda, K. Sumiya and S. Suzuki: Jpn. J. Appl. Phys. 32 (1993) 4323[JSAP].
  4. H. Ohsato, T. Ohhashi, K. Sumiya, S. Suzuki and T. Okuda: Ext. Abstr. 42th Annu. Denver X-Ray Conf., Denver, August (1993).
  5. R. L. Bolton: Dr. Thesis, Ceramic Engineering, University of Illinois, Urbana, Illinois, 1968.
  6. D. Kolar, Z. Stadler, S. Gaberscek and D. Suvorov: Ber. Dtsh. Keram. Ges. 55 (1978) 346.
  7. D. Kolar, S. Gaberscek and B. Volavsek: J. Solid State Chem. 38 (1981) 158[CrossRef].
  8. K. Wakino, K. Minai and H. Tamura: J. Am. Ceram. Soc. 67 (1984) 278.
  9. S. Kawashima, M. Nishida, I. Ueda and H. Ouchi: Ext. Abstr. 87th Annu. Meet. Am. Ceram. Soc., Cincinnati, (1985) (Electronics Division Paper No. 15-E-85).
  10. S. Nishigaki, H. Kato, S. Yano and R. Kamimura: Ceram. Bull. 66 (1987) 1405.
  11. A. Yamada, Y. Utsumi and H. Watarai: Jpn. J. Appl. Phys. 30 (1991) 2350[JSAP].
  12. J. Takahashi, T. Ikegami and K. Kageyama: J. Am. Ceram. Soc. 74 (1991) 1868[CrossRef].
  13. J. Takahashi, T. Ikegami and K. Kageyama: J. Am. Ceram. Soc. 74 (1991) 1873[CrossRef].
  14. E. S. Razgon, A. M. Gens, M. B. Varfolomeev, S. S. Korovin and V. S. Kostomarov: Zh. Neorg. Khim. 25 (1980) 1701. Translation: Russ. J. Inorg. Chem. 25 (1980) 945.
  15. E. S. Razgon, A. M. Gens, M. B. Varfolomeev, S. S. Korovin and V. S. Kostomarov: Zh. Neorg. Khim. 25 (1980) 2298. Translation: Russ. J. Inorg. Chem. 25 (1980) 1274.
  16. R. G. Matveeva, M. B. Varfolomeev and L. S. ll'yushchenko: Zh. Neorg. Khim. 29 (1984) 31. Translation: Russ. J. Inorg. Chem. 29 (1984) 17.
  17. H. Ohsato, T. Ohhashi and T. Okuda: Ext. Abstr. AsCA '93 Conf., Singapore, November, 14U-50.
  18. B. W. Hakki and P. D. Coleman: IRE Trans. Microwave Theory & Tech. MTT-8 (1960) 402.
  19. S. Nishigaki and H. Kato: Ceram. Jpn. 20 (1985) 401.
  20. J. Kato: Ceram. Jpn. 27 (1992) 728.
  21. T. Hyuga, K. Matumoto and H. Ichimura: Technology and Research Report of the Electronics Communications Society, CPM86-31, (1986) 401.
  22. S. Kawashima, M. Nishida, I. Ueda and H. Ouchi: J. Am. Ceram. Soc. 66 (1983) 421[CrossRef].
  23. S. Nishigaki, H. Kato, S. Yano and R. Kamimura: Ceram. Bull. 66 (19287) 1405.
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