Bragg diffraction imaging of defects at crystal surfaces.

H Shuman

doi:10.1016/s0304-3991(76)92099-4

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Bragg diffraction imaging of defects at crystal surfaces.

H Shuman

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Abstract

Scanning Bragg diffraction images of lattice defects are calculated for a medium energy electron beam at grazing incidence. A stacking fault intersecting the surface introduces additional dynamical beams which interfere to produce a band of fringes near the fault. A dislocation emerging at the surface perturbs the local lattice orientation and therefore changes the reflected beam intensities. It is shown that for a probe size of 10 A the contrast for these defects is about 50 percent while the reflected intensity is 1-10 percent of the incident intensity.

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Crystallography Microscopy, Electron Models, Theoretical Journal Article

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H Shuman. 1977. Bragg diffraction imaging of defects at crystal surfaces.. https://doi.org/10.1016/s0304-3991(76)92099-4

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