Journal of the Korean Ceramic Society (한국세라믹학회지)

The Korean Ceramic Society (한국세라믹학회)
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Analysis of cation ordering and lattice distortion of $(1-x)Ba(Mg_{1/3}Ta_{2/3})O_3-xLa(Mg_{2/3}Ta_{1/3})O_3$ complex perovskite solid solution using powder x-ray diffraction

분말 x선 회절을 통한 $(1-x)Ba(Mg_{1/3}Ta_{2/3})O_3-xLa(Mg_{2/3}Ta_{1/3})O_3$복합페로브스카이트 고용체의 양이온규칙화 및 격자비틀림 분석

  • Youn, Hyuk-Joon (School of Materials Science & Engineering, Seoul National University) ;
  • Ko, Kyung-Hyun (Department of Marterial Science and Engineering, Ajou Univeristy) ;
  • Hong, Kug-Sun (School of Materials Science & Engineering, Seoul National University) ;
  • Kim, Hwan (School of Materials Science & Engineering, Seoul National University)
  • 윤혁준 (서울대학교 재료공학부) ;
  • 고경현 (아주대학교 재료공학과) ;
  • 홍국선 (서울대학교 재료공학부) ;
  • 김환 (서울대학교 재료공학부)
  • Published : 1997.02.01
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Abstract

새로운 복합페로브스카이트계 고용체 (1-x)Ba(Mg1/3Ta2/3)O3-xLa(Mg2/3Ta1/3)O3(x=0.0-1.0)를 설계하고 조성에 따른 고용체의 결정구조의 변화 및 MPB(Morphotropic Phase Boundary)를 분말 XRD를 이용하여 분석하였다. 초격자회절선의 변화로부터 MBT에 10mol%의 LMT를 치환함에 따라 1:2에서 1:1로의 규칙화타입의 전이가 일어남을 알 수 있었다. 면심입방정구조 영역(0.10.8조성의 경우, 주회절선의 피이크분리 및 새로운 회절선들로부터 격자비틀림의 형태가 단사정임을 알 수 있었다.

Keywords

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