Applied Microscopy

Korean Society of Microscopy (한국현미경학회)
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Effects of Higher-Order Laue Zone Reflections on HRTEM Images for illumination along an off-Bone Axis of a Crystal

비 결정 축(off-zone axis)으로 입사된 빔에 대한 고 분해 투과전자현미경 이미지에서 HOLZ 반사 빔의 효과

  • 김황수 (경성대학교 이과대학 물리학과)
  • Published : 2007.12.31
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Abstract

In this paper we explored a possibility of observation for effects of higher-order Laue zone(HOLZ) reflections on high resolution transmission electron microscope(HRTEM) images for illumination along an off-zone axis of a crystal. The analysis of the observation could give useful three dimensional crystal structure information. For the image simulation the Howie-Whelan equation was used with modification of including HOLZ reflections. This study clearly indicates that HRTEM images for a very thin crystal tilted by a few degrees from a zone axis show the effects of HOLZ reflections and contain some information of atomic arrangements along the zone axis.

이 논문에서 비 결정 축(off-zone axis)으로 입사된 빔에 대한 고 분해 투과전자현미경(HRTEM)이미지로부터 HOLZ 반사 빔의 효과를 관측 할 수 있는 가능성을 탐색하였다. 이 관측에 대한 분석은 3차원적 결정 구조에 대한 유용한 정보를 줄 수 있다. 이 HRTEM 이미지 시뮬레이션에는 HOLZ 반사 빔들을 포함하는 수정된 Howie-Whelan 방정식이 사용되었다. 이 논문의 결론은 한 zone 축으로부터 수 도 경사진 매우 얇은 결정에 대한 고 분해 전자현미경 이미지는 HOLZ 반사 빔의 효과를 나타내고 있고 따라서 그 zone축에 따른 원자 배열의 정보를 분명히 내포함을 보여 주고 있음을 말한다.

Keywords

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