Physical Properties and Out-put Characteristics of Piezoelectric Transformer of <TEX>$Pb(Mg, Te, Mn, Nb)O_3-PZT$</TEX> Ceramics with Addition of <TEX>$CeO_2$</TEX>

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J. Korean Ceram. Soc. > Volume 30(9); 1993 > Article

Journal of the Korean Ceramic Society 1993;30(9): 761.

$CeO_2$을 첨가한 $Pb(Mg, Te, Mn, Nb)O_3-PZT$계 세라믹스의 물리적 성질과 압전트랜스의 출력특성

박순태, 정수태¹, 이종헌²

부산전문대학 전자과
¹부산공업대학교 전자공학과
²동아대학교 전자공학과

Physical Properties and Out-put Characteristics of Piezoelectric Transformer of $Pb(Mg, Te, Mn, Nb)O_3-PZT$ Ceramics with Addition of $CeO_2$

ABSTRACT

Electrical and mechanical properties of Pb(Mg, Te, Mn, Nb)O3-PZT ceramics are investigated as a function of CeO2 addition (0 to 0.3wt%), and the output characteristics of piezoelectric transformer are also presented. The grain size decreased and the shapes of particles were more uniform with the addition of CeO2. The coercive electric field(9500V/cm), mechanical quality factor (2500) and bend strength (1065kg/$textrm{cm}^2$) were improved by addition of CeO2 0.2wt%. After repetition of a number of stress cycles, the degradation of k33 was not found in this sample. The voltage step-up ratio (Vdc/Vrms) of piezoelectric ceramic transformer (half wavevoltage doubler, load resistor 100M.ohm) was about 950 in a linear region, its value was relatively higher than other materials.