Transmission Electron Diffraction

  • Yoshio MatsuiEmail author


According to the de Broglie’s theory, electron (with mass m and velocity v) has a wave nature with wavelength λ = h/mv (h: Planck constant), which is 0.0037 nm, if accelerated at 100 kV, and is quite small compared with λ of visible light (= 500 nm) or even X-ray (= 0.1 nm). This indicates that electron can be a source of diffraction experiments with smaller λ. Nowadays, reflection type of diffraction as illustrated in red ray-diagram of Fig. 123.1a is mostly used for surface analysis using low-energy beam (LEED), while the transmission electron diffraction (TED), as illustrated by green ray-diagram in Fig. 123.1a, is applied mainly for inner structure of thin crystals by using TEM (transmission electron microscope) with relatively higher energy.
Fig. 123.1

a Ray diagrams for both “transmission” and “reflection” type of electron diffraction modes are illustrated with green and red arrows, respectively. b Principle of diffraction condition in transmission case is shown schematically


Selected-area electron diffraction (SAED) Transmission electron microscope (TEM) Dark-Field (DF) image Multiple Twin Modulated structure 


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© Springer Nature Singapore Pte Ltd. 2018

Authors and Affiliations

  1. 1.Research Center for Functional MaterialsNational Institute for Materials ScienceTsukubaJapan

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