Diffraction in TEM - Introduction
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Transcript of Diffraction in TEM - Introduction
EM Course – Elastic Scattering
Professor Rodney Herring
Diffraction in TEM - Introduction
Diffraction in TEM - Introduction
Diffraction in TEM - Introduction
Diffraction in TEM - Introduction
Wave Propagation Vector, K
Wave Propagation Vector, K
Wave Propagation Vector, K
or
Scattering From A Crystal
Scattering From A Crystal
Defects in GaAs/InGaAs LaserNote that the laser looks to have a perfect crystal structure when using g=200[011], electron diffraction vector at the zone axis [011], but
actually has dislocations, which moved into the active region by creep, when viewed using different diffraction contrast imaging conditions using g=220[110] diffraction vector at the [110] zone axis.
Diffraction From Planes
Diffraction From Planes
Diffraction From Planes
Diffraction From Planes
Diffraction From Planes
Diffraction From Planes
Dynamic Diffraction
Diffraction From Zone Axis
The [111] zone axis of Al
202
022
022
Note that 0ug
Selected Area Diffraction
Selected Area Diffraction
Selected Area Diffraction
Selected Area Diffraction
TEM Diffraction Summary