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b) Application Report: Bestimmung des amorphen Anteils (Glasbestimmung_Format_1.pdf).
The literature describes two methods to determine the amorphous fraction of a sample using the XRD:
- Internal standard By adding a known amount of a standard substance, it is possible to calibrate the total amount of the crystalline substance and thereby determine the amorphous fraction.
- by evaluating the underground halo The crystalline intensity component and the overall intensity are determined by adapting the course of the substrate. The difference between the two total intensities depends on the amount of amorphous phases in the sample.
The articel is in German.