• Title/Summary/Keyword: $Ba(Ti_{1-x}Sn_x)_4O_9$

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Properties of Sintered Body of the $Ba(Ti_{1-x}Sn_x)_4O_9$ Ceramics Synthesized by Oxalate Method (II) (수산염법으로 합성한 $Ba(Ti_{1-x}Sn_x)_4O_9$ 분말의 소결체 특성(II))

  • 허혜경;지미정;안주삼;최병현
    • Journal of the Korean Ceramic Society
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    • v.33 no.8
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    • pp.895-900
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    • 1996

  • Ba(Ti1-xSnx)4O9 powder was synthesized by oxalate method. With the substitution of Sn into Ti site the sintered BaTiO4 crystal phase was stabilized due to the formation of solid solution. The optimal amounts of Sn solutbility for formation of BaTi4O9 crystalline phase was 0.16mole and of Sn was substituted and sintering was done at 135$0^{\circ}C$ for 30 minutes long rod type crystal was well developed and the highest Q value was obtained. But dielectric constant wasnearly constant without regarding to the Sn addition and the sintering time.

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Dielectric Properties of $Ba_{0.9}Ca_{0.1}(Ti_{1-x}Sn_x)O_3$ ($Ba_{0.9}Ca_{0.1}(Ti_{1-x}Sn_x)O_3$계의 유전성)

  • 윤기현;김재현;조경화;송효일
    • Journal of the Korean Ceramic Society
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    • v.23 no.1
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    • pp.7-12
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    • 1986

  • Dielectric properties of $Ba_{0.9}Ca_{0.1}(Ti_{1-x}Sn_x)O_3$ were investigated from x=0 to 0.20, and temperature range -4$0^{\circ}C$~13$0^{\circ}C$ Density and grain size decreased with increasing Sn content due to grain growth inhibitor. Dielectric constant below the Curie temperature increased with increasing Sn content and dissipation factor dec reased. These results are due to grain size effect and internal stress. Curie temperature was shifted to lower temperature with increasing ratio of total polarizability to volume resulting from substitution of $Ba^{2+}$ ion with $Ca^{2+}$ ion $Ti^{4+}$ ion with $Sn^{4+}$ ion.

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