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Powder X-ray diffraction, as one of the methods for the study of drug polymorphism, has the advantages of not destroying samples and simple operation, and is the main method for the qualitative and quantitative analysis of drug polymorphism at present.

The Bragg glass phase is a near-perfect crystalline phase with glassy characteristics that is expected to occur in vortex lattices and charge density wave systems in the presence of disorder.

This paper introduces the related knowledge of crystal pattern and crystal fetish

X-ray diffraction technique is widely used in drug analysis. X-ray diffraction technique is an analytical method used to study the structure of a substance. This technique has many applications in drug analysis.

Powder X-ray diffraction, as one of the methods for the study of drug polymorphism, has the advantages of no sample destruction and simple operation.

X-ray diffraction spectroscopy mainly analyzes the crystal state and microstructure of materials, and there are two X-ray diffraction measurement methods for crystal analysis.

Automatic X-ray orientation instrument is an indispensable instrument for precision processing and manufacturing crystal devices. It is widely used in the research, processing and manufacturing of crystal materials.

In the past 10 years, the Institute of Physics of the Chinese Academy of Sciences has used powder diffraction method to determine the crystal structure of many inorganic and organic compounds.

The composition of the diffraction pattern is mainly the position and intensity of the diffraction peak, and our analysis of the XRD pattern is based on the changes in the intensity and position to explain the changes in the micro and macro of the material.