How can I figure out phases from TEM FFT images?

Jina Lee @Jina-Lee-24

16 August 2024 1 8K Report

I transformed TEM images to FFT using Gatan software.

How can I figure out phases from the attached TEM FFT images?

Both of images are single phases?

And can I know the phases from just patterns without d-spacing?

H. Douglas Morris

The FFT shows two different in-plane angles for the reciprocal space data points. I can't tell from this data set but if you measure the point to point spacing in FFT images this will give you the reciprocal distance of the lattice points. These look to be different, at least by visual inspection.

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