한국재료학회지 (Korean Journal of Materials Research)

  • 제14권5호
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  • Pages.334-337
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  • 2004
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  • 1225-0562(pISSN)
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  • 2287-7258(eISSN)
한국재료학회 (Materials Research Society of Korea)
권호 표지
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PMN-PZT계 세라믹스의 압전특성에 미치는 MnO2의 영향

Effects of MnO2on the Piezoelectric Properties of PMN-PZT-based Ceramics

  • 김재창 (충주대학교 신소재공학과/나노기술연구소) ;
  • 황동연 (충주대학교 신소재공학과/나노기술연구소) ;
  • 이미영 (충주대학교 신소재공학과/나노기술연구소) ;
  • 유신욱 (충주대학교 신소재공학과/나노기술연구소) ;
  • 김영민 (고려전자(주) 소재개발과) ;
  • 어순철 (충주대학교 신소재공학과/나노기술연구소) ;
  • 김일호 (충주대학교 신소재공학과/나노기술연구소)
  • 발행 : 2004.05.01
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초록

Perovskite PMN-PZT-based ceramics were prepared and the$ MnO_2$ doping effects on their piezoelectric properties were investigated. Grain size decreased with increasing the $MnO_2$ content, and the pyrochlore phase was not identified in the sintered PMN-PZT ceramics with 0.01～1.0wt% $MnO_2$. Piezoelectric voltage and charge constants were reduced and mechanical quality factor increased with increasing the $MnO_2$ content. However, electromechanical coupling coefficient slightly decreased with increasing the MnO$_2$ content without regard to the grain size.

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참고문헌

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