X-ray diffraction Patterns for different structures:

Amorphous/ Liquid:
Amorphous/Liquid samples contain a large number of atoms without forming any major crystalline phases. Hence, there is no possibility to get a clear diffraction peak in such a specimen. As a result, the diffraction from such structure provides a broad peak as shown in Figure 3.05.

Figure 3.05: Typical XRD pattern of amorphous or liquid specimen.

Gas molecules:
Gas molecules move randomly within a given volume resulting no significant diffraction. Hence, as demonstrated in Figure 3.06, the intensity of X-ray drops largely with increasing angle and attains zero.

Figure 3.06: Typical XRD pattern of gas molecules.