engleski

Prominent structure modulation in the CaxCuO2 composite crystal (x ≈ 5/6) ; an artifact of imaging conditions

In conclusion, imaging of crystal structure generally depends on all instrumental and observational parameters such as: focusing, aperture, crystal tilt, specimen thickness. Contrast of atomic columns is a consequence of dynamical interaction of channeling electron with the crystal potential, so that at constant thickness, columns of different types are imaged with different contrast, while the same type of columns can be imaged differently at different thickness. Imaging of modulation in composite crystals is affected by illumination tilt.

Microscopy; Instrumentation; Methodology

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