• 제목/요약/키워드: microwave sintering

검색결과 303건 처리시간 0.03초

(1-x)Ba($Mg_{1/3}Ta_{2/3})O_3$-xBa($Co_{1/3}Nb_{2/3})O_3$(x=0.25~0.5) 세라믹스의 구조 및 마이크로파 유전특성 (The structural and Microwave Dielectric Properties of (1-x)Ba($Mg_{1/3}Ta_{2/3})O_3$-xBa($Co_{1/3}Nb_{2/3})O_3$(x=0.25~0.5) Ceramics)

  • 황태광;최의선;임인호;이영희
    • 한국전기전자재료학회논문지
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    • 제14권3호
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    • pp.197-201
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    • 2001

  • The microwave dielectric properties of (1-x)Ba(Mg$_{1}$3/Ta$_{2}$3/)O$_3$-xBa(Co$_{1}$3/Nb$_{2}$3)O$_3$(x=0.25~0.5) ceramics depending on the Ba(Co$_{1}$3/Nb$_{2}$3/)O$_3$[BCN] contents and the possibility of application as a microwave dielectric resonator were investigated. The specimens were prepared by he conventional mixed oxide method using there sintering temperature of 1575$^{\circ}C$. It was found that Ba(Mg$_{1}$3/Ta$_{2}$3/)O$_3$[BMT] and BCN formed a solid solution with complex perovskite structure. As the mole fraction of BCN increased, dielectric constant increased while temperature coefficient of resonant frequency decreased. The highest value of quality factor, Qxf$_{0}$=138,205GHz, obtained in the sample of 0.9BMT-0.1BCN ceramics. In the range of x$\geq$0.4, the dielectric constant was about 30. The 0.55BMT-0.45BCN ceramics showed excellent microwave dielectric properties with $\varepsilon$$_{r}$=30.84, Qxf$_{0}$=75,325GHz and $\tau$$_{f}$=2.9015ppm/$^{\circ}C$.EX>.EX>.

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Mn$O_2$의 첨가가 ($Pb_{0.45}$$Ca_{0.55}$)($Fe_{0.5}$$Nb_{0.5}$)$O_3$세라믹스의 소결 및 마이크로웨이브 유전 특성에 미치는 영향 (Effect of $MnO_2$ Addition on the Sintering Temperature and Microwave Dielectric Properties of ($Pb_{0.45}$$Ca_{0.55}$)($Fe_{0.5}$$Nb_{0.5}$)$O_3$Ceramics)

  • 김영웅;박재관;박재환;김인태;김효태;김윤호;최덕균
    • 한국재료학회:학술대회논문집
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    • 한국재료학회 1998년도 한국재료학회 춘계학술발표강연 및 논문개요집
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    • pp.84-84
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    • 1998

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