대한전기학회:학술대회논문집 (Proceedings of the KIEE Conference)

대한전기학회 (The Korean Institute of Electrical Engineers)
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길이진동을 이용하는 PZT계 세라믹 공진자의 온도안정성에 관한 연구

A Study on Temperature Stability of PZT Piezoelectric Ceramic Resonators using Length Extensional Vibration

  • Han, Seong-Hun (Dept. of Electrical Engineering in Cheju National University) ;
  • Lim, Dae-Kwan (Dept. of Electrical Engineering in Cheju National University) ;
  • Lee, Gae-Myoung (Dept. of Electrical Engineering in Cheju National University)
  • 발행 : 1999.11.20
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초록

The piezoelectric ceramic resonator using length extensional vibration rather than contour extensional vibration in terms of the size is suitable for personal portable communication. In this paper, $Pb(Zr_{x}Ti_{l-x})O_{3}$ + r[wt%]$Cr_{2}O_{3}$ ceramics, x=0.56, 0.53, 0.50 (ie, Zr/Ti ratios = 56 /44, 53/47, 50/50) r=0, 0.3[wt %], were fabricated. Temperature stability of length extensional vibration mode of those specimens was investigated. Both crystal structure with rhombohedral phase in the case of no addition of $Cr_{2}O_{3}$ and crystal structure with morphotrophic phase boundary in case of additions of 0.3[wt %]$Cr_{2}O_{3}$ had the vest temperature stability and improved temperature stability through thermal aging.

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