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Quantitative high resolution electron microscopy of grain boundaries

机译:晶界的定量高分辨率电子显微镜

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摘要

The >= 11 (113)/[110] symmetric tilt grain boundary has been characterized by high resolution transmission electron microscopy. The method by which the images are prepared for analysis is described. The statistics of the image data have been found to follow a normal distribution. The electron-optical imaging parameters used to acquire the image have been determined by non-linear least-square image simulation optimization within the perfect crystal region of the micrograph. A similar image simulation optimization procedure is used to determine the atom positions which provide the best match between the experimental image and the image simulation.
机译:> = 11(113)/ [110]对称倾斜晶界已通过高分辨率透射电子显微镜表征。描述了准备图像进行分析的方法。已经发现图像数据的统计遵循正态分布。在显微照片的理想晶体区域内,通过非线性最小二乘图像模拟优化确定了用于获取图像的电子光学成像参数。使用类似的图像模拟优化程序来确定原子位置,该原子位置可在实验图像和图像模拟之间提供最佳匹配。

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