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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Effect of Na2CO3 Addition on Piezoelectric Properties in (Na0.5K0.5)NbO3-LiTaO3 Ceramics

Na2CO3 첨가에 따른 (Na0.5K0.5)NbO3-LiTaO3 세라믹스의 압전 특성

  • 김민수 (한국전기연구원 전자기소자연구그룹) ;
  • 오석 (창원대학교 세라믹공학과) ;
  • 이대수 (한국전기연구원 전자기소자연구그룹) ;
  • 박언철 (한국전기연구원 전자기소자연구그룹) ;
  • 정순종 (한국전기연구원 전자기소자연구그룹) ;
  • 송재성 (한국전기연구원 전자기소자연구그룹)
  • Published : 2006.11.01
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Abstract

Dense $0.95(Na_{0.5}K_{0.5})NbO_3-0.05LiTaO_3$ (NKN-5LT) ceramics were developed by conventional sintering process. Sintering temperature was lowered by adding $Na_2CO_3$ as a sintering aid. The electrical properties of NKN-5LT ceramics were investigated as a function of $Na_2CO_3$ concentration. When the sample sintered at $1000^{\circ}C$ for 4 h with the addition of 1 mol% $Na_2CO_3$, electro-mechanical coupling factor $(k_p)$ and piezoelectric coefficient $(d_{33})$ of NKN-5LT ceramics were found to reach the highest values of 0.43 and 190 pC/N, respectively.

Keywords

References

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