Focusing Anisotropy of Kikuchi Lines Obtained by Selected Area Diffraction of Electron Microscopy

概要

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In the course of the observation of diffraction patterns by the method of selected area diffraction, it was often found that Kikuchi lines crossing to each other did not appear sharply at the same time. When the incident and Bragg spots were focused sharply, some Kikuchi lines were diffuse or disappeared. The latter Kikuchi lines became sharp when the intermediate lens current was changed a certain amount. Under this condition, the incident spot was defocused showing the shape of the selector aperture and the formerly appearing Kikuchi lines disappeared. This phenomenon is inferpreted as due to the curving of the specimen crystal and it is shown that the radius of curvature can be estimated from experimental data.
社団法人応用物理学会の論文
1970-01-05