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논문 기본 정보

자료유형
학술저널
저자정보
梁正普 梁完碩 (제주대학교) 李開明 (제주대학교)
저널정보
대한전기학회 전기학회논문지 전기학회논문지 제57권 제7호
발행연도
2008.7
수록면
1,213 - 1,217 (5page)

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초록· 키워드

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Poling is an important process in fabricating PZT ceramic devices such as filters and resonators and activates piezoelectricity to sintered PZT ceramics. Tolerance of the operating frequency of these devices is tightly required in applications. And a factor to attribute the tolerance is the temperature dependence of the resonance frequency of PZT ceramics. In this paper the relationship of poling strength and temperature dependence of resonance frequency of PZT specimens was studied. The Pb(Zr<SUB>0.53</SUB>Ti<SUB>0.47</SUB>)O₃ ceramics were fabricated and the poling strengths were chosen to be 0.5, 1.5, 2.5 and 3.5 [㎸/㎜]. The dielectric constant of the specimen poled in poling strength 0.5 [㎸/㎜] was less than that of unpoled specimen and the specimen poled in higher electric field had the higher dielectric constant. (002) peak in X-ray diffraction patterns of the specimens increased as poling strength increased. And the change of resonance frequency of the specimens according to the variation of temperature was measured. Resonance frequency of all specimens increased as the temperature increased. The specimen poled in higher electric field had the smaller positive temperature coefficient of resonance frequency. The effect that temperature coefficient of resonance frequency becomes smaller is obtained when Zr mole in PZT composition equation increase. Controlling the poling strength is believed to be a method to adjust the temperature stability of resonance frequency of the PZT ceramic devices.

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Abstract
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2. 실험
3. 실험결과 및 고찰
4. 결론
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UCI(KEPA) : I410-ECN-0101-2009-560-019063089