Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference (한국전기전자재료학회:학술대회논문집)

The Korean Institute of Electrical and Electronic Material Engineers (한국전기전자재료학회)
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Microstructure Characteristics and Electrical Properties of Sintered $(Bi,La)_4Ti_3O_{12}$ Ferroelectric Ceramics

소결한 $(Bi,La)_4Ti_3O_{12}$ 강유전체 세라믹의 미세구조 및 전기적 특성

  • 유효선 (충주대학교 신소재공학과/충주대학교 친환경 에너지 변환.저장소재 및 부품개발 연구센터) ;
  • 손용호 (충주대학교 신소재공학과/충주대학교 친환경 에너지 변환.저장소재 및 부품개발 연구센터) ;
  • 어순철 (충주대학교 신소재공학과/충주대학교 친환경 에너지 변환.저장소재 및 부품개발 연구센터) ;
  • 류성림 (충주대학교 신소재공학과/충주대학교 친환경 에너지 변환.저장소재 및 부품개발 연구센터) ;
  • 권순용 (충주대학교 신소재공학과/충주대학교 친환경 에너지 변환.저장소재 및 부품개발 연구센터)
  • Published : 2006.06.22
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Abstract

1mm-thick BLT ceramics were sintered in accordance with a bulk ceramic fabrication process. AII XRD peaks detected in the sintered ceramics were indexed as the Bi-layered perovskite structure without secondary phases. Density was increased with increasing the sintering temperature up to $1050^{\circ}C$ and the maximum value was about 98% of the theoretical density. The remanent polarization (2Pr) value of BLT ceramic sintered at $1050^{\circ}C$ was approximately $6.5\;{\mu}C/cm^2$ at the applied voltage of 4.5 kV. The calculated electromechanical coupling factor ($k_t$) of it was about 5% and the mechanical quality factor (Qm) was about 2200. From these results, a BLT ceramic target for pulsed laser deposition (PLD) system was successfully fabricated.

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