Journal of Sensor Science and Technology (센서학회지)

The Korean Sensors Society (한국센서학회)
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Dielectric and Piezoelectric Properties of MnO2-doped PSN-PNN-PT Ceramics

MnO2가 첨가된 PSN-PNN-PT 세라믹스의 유전 및 압전특성

  • Lee, Jong-Deok (Department of Electric & Electronic Engineering, Seoanm University)
  • 이종덕 (서남대학교 전기전자공학과)
  • Published : 2004.03.31
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Abstract

The dielectric and piezoelectric properties of 0.36Pb($Sc_{1/2}Nb_{1/2}$)$O_{3}$-0.25Pb($Ni_{1/3}Nb_{2/3}$)$O_{3}$-0.39Pb$TiO_{3}$ (hereafter PSNNT) at the morphotropic phase boundary (MPB) composition were investigated with $0{\sim}2.5$ mot% $MnO_{2}$ doping. Bulk density, dielectric loss and tetragonality of crystal structure were all improved with increasing $MnO_{2}$ additive content. With increasing $MnO_{2}$ additive content, the electromechanical coupling factor and quality factor were also increased: Electromechanical coupling $k_{p}$ and quality factor $Q_{m}$ at 2.0 mol% $MnO_{2}$ doping with were showed highest values of 55.6 % and 252, respectively.

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References

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