Applied Microscopy

Korean Society of Microscopy (한국현미경학회)
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Zn Vacancy Ordering in $Ba (Zn_{1/3}Ta_{2/3})O_3$ Ceramics

  • Lee, Hwack-Joo (New Materials Evaluation Center, Korea Research Institute of Standards and Science) ;
  • Ryu, Hyun (New Materials Evaluation Center, Korea Research Institute of Standards and Science) ;
  • Choi, Seong-Jin (Division of Materials and Metallurgical Engineering, Korea University) ;
  • Nahm, Sahn (Division of Materials and Metallurgical Engineering, Korea University) ;
  • Byun, Jae-Dong (Division of Materials and Metallurgical Engineering, Korea University)
  • 이확주 (한국표준과학연구원 신소재평가센터) ;
  • 류현 (한국표준과학연구원 신소재평가센터) ;
  • 최성진 (고려대학교 공과대학 재료금속공학부) ;
  • 남산 (고려대학교 공과대학 재료금속공학부) ;
  • 변제동 (고려대학교 공과대학 재료금속공학부)
  • Published : 1997.06.01
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Abstract

New type of ordering along 1110] direction was found In BZT sintered at $1400^{\circ}C$ for 90 hours by using X-ray diffraction analysis and high resolution transmission electron microscopy. The wavelength of the modulated structure was 0.9 nm which is three times larger than the interplanar distance of (110) plane. New type of ordering is considered to be formed as a result of Zn vancacy ordering and new structural model was proposed. The computer simulated electron diffraction and the structural images are in good agreement with those obtained by experiments.

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