대한전자공학회논문지 (Journal of the Korean Institute of Telematics and Electronics)

대한전자공학회 (The Institute of Electronics and Information Engineers)
권호 표지

$xBa(Zn_{1/3}Nb_{2/3})O_3-(1-x)Sr(Zn_{1/3}Nb_{2/3})O_3$ 고용체의 온도 변화에 따른 유전 특성

Temperature Dependence of the Dielectric Properties $xBa(Zn_{1/3}Nb_{2/3})O_3-(1-x)Sr(Zn_{1/3}Nb_{2/3})O_3$ Solid Solution

  • 심화섭 (西江大學校 理工大學 電子工學科) ;
  • 이한영 (西江大學校 理工大學 電子工學科) ;
  • 김근영 (西江大學校 理工大學 電子工學科) ;
  • 안철 (西江大學校 理工大學 電子工學科)
  • Shim, Hwa-Sup (Dept. of Elec. Eng., College of Scie. & Eng., Sogang Univ.) ;
  • Lee, Han-Yeong (Dept. of Elec. Eng., College of Scie. & Eng., Sogang Univ.) ;
  • Kim, Geun-Young (Dept. of Elec. Eng., College of Scie. & Eng., Sogang Univ.) ;
  • An Chul (Dept. of Elec. Eng., College of Scie. & Eng., Sogang Univ.)
  • 발행 : 1990.11.01
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초록

본 논문에서는 고주파 대역에서의 $xBa(Zn_{1/3}Nb_{2/3})O_{3}\[BZN]-(1-x)\Sr(Zn_{1/3}Nb{2/3)O_{3}\[SZN]$고 용체의 온도 및 mol 비에 따른 유전 특성에 관하여 연구하였다. BZN은 10GHz에서 유전 상수 및 무부하 Q값이 $40.5{\pm}0.5,5980{\pm}100$이며, SZN은 10.2GHz에서 각각 $36.9{\pm}0.5,2700{\pm}100$을 보였다. 또한 공진 주파수의 온도 계수는 각각 $+27.5ppm/{\circ}C$와 $-39.1ppm/{\circ}C$을 나타냈다. x-BZN-(1-x)SZN 고용체에서 온도변화에 가장 안정한 특성을 보인 고용체는 0.3BZN-0.7SZN 고용체이다. 이 고용체의 유전 상수, 무부하 Q값 및 공진 주파수의 온도 계수는 9.8 GHz에서 각각 $41.5{\pm}0.2,2920{\pm}100$ 및 $-3.5ppm/{\circ}C$를 보였다.

The temperature and the composition dependence of the dielectric properties of the solid solution materials in the system $xBa(Zn_{1/3}Nb_{2/3})O_{3}\[BZN]-(1-x)\Sr(Zn_{1/3}Nb{2/3)O_{3}\[SZN]$ at microwave frequency was studied. The dielectric constant and unloaded Q were $40.5{\pm}0.5,5980{\pm}100$ respectively for BZN at 10 GHz and $36.9{\pm}0.5,2700{\pm}100$ for SZN at 10.2GHz. The temperature coefficient of the resonant frequency was $+27.5ppm/{\circ}C$ for BZN and $-39.1ppm/{\circ}C$ for SZN. The results also showed that 0.3 BZN-0.7 SZN is the most temperature-stable composition among xBZN-(1-x) SZN solid solutions. In this case, the dielectric constant, the unloaded Q and $\tau_{f}$ at 9.8GHz were $41.5{\pm}0.2,2920{\pm}100$ and $-3.5ppm/{\circ}C$, respectively.

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