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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Piezoelectric Properties of Ag2O-doped 0.98(Na0.5K0.5)NbO3-0.02Li(Sb0.17Ta0.83)O3 Ceramics

Ag2O 첨가에 따른 0.98(Na0.5K0.5)NbO3-0.02Li(Sb0.17Ta0.83)O3 세라믹스의 압전특성

  • Kim, Hyun-Ju (Department of Electronic Materials Engineering, Kwangwoon University) ;
  • Lee, Seung-Hwan (Department of Electronic Materials Engineering, Kwangwoon University) ;
  • Lee, Sung-Gap (Department of Ceramic Engineering, Engineering Research Institute, Gyeongsang National University) ;
  • Lee, Young-Hie (Department of Electronic Materials Engineering, Kwangwoon University)
  • 김현주 (광운대학교 전자재료공학과) ;
  • 이승환 (광운대학교 전자재료공학과) ;
  • 이성갑 (경상대학교 세라믹공학과) ;
  • 이영희 (광운대학교 전자재료공학과)
  • Received : 2011.12.20
  • Accepted : 2011.12.24
  • Published : 2012.01.01
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Abstract

Lead-free $0.98(Na_{0.5},K_{0.5})NbO_3-0.02Li(Sb_{0.17}Ti_{0.83})O_3$ (hereafter 0.98NKN-0.02LST) ceramics doped with $Ag_2O$ were prepared using a conventional mixed oxide method. The specimen showed superior structural and electrical properties when 1 mol% $Ag_2O$ was doped. For the 0.98NKN-0.02LST+1.0mol%$Ag_2O$ ceramics sintered at $1,100^{\circ}C$, piezoelectric constant ($d_{33}$) of sample showed the optimum values of 207 pC/N. The 0.98NKN-0.02LST+1.0 mol%$Ag_2O$ ceramics are a promising candidate for lead-free piezoelectric materials.

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References

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