Journal of the Korean Institute of Electrical and Electronic Material Engineers (한국전기전자재료학회논문지)

The Korean Institute of Electrical and Electronic Material Engineers (한국전기전자재료학회)
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Piezoelectric Characteristics and Temperature Stability of Resonant Frequency of PbTiO3 System Ceramics for High Frequency Resonator using Srd Overtone Thickness Vibration Mode

  • Yoo, Juhyun (Department of Electrical Engineering, Semyung University) ;
  • Min, Sukkyu (Department of Electrical Engineering, Semyung University) ;
  • Hwang, Sangmo (Department of Electrical Engineering, Semyung University) ;
  • Park, Changyub (Department of Electrical Engineering, Semyung University) ;
  • Yoon, Hyunsang (Department of Electrical Engineering, Kyungmoon College, Pyungtack)
  • Published : 2002.04.01
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Abstract

In this study, $Pb_{0.88}(La_{\alpha}Nd_{1-\alpha})_{0.08}(Mn_{1/3}Sb_{2/3})_{0.02}Ti_{0.98}O_3$ system ceramics with La molar ratio $\alpha$ variation were manufactured for 24 MHz class resonator application. Electromechanical coupling factor, mechanical quality factor and dynamic range of $3^{rd}$ overtone thickness vibration mode were measured as the variations of La and Nd molar ratio. Mechanical quality factor and dynamic range at $\alpha$ = 0.6 composition ceramics showed the highest value of 2691 and 52.37 dB, respectively. The temperature coefficient of resonant frequency measured from $-20^{\circ} to 80^{\circ}$ showed an excellent value of $5ppm/^{\circ}C$ at $\alpha$=1 composition ceramics.

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References

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