hello.
I want to distinguish the type of dislocation (edge, screw) through the XRD rocking curve.
To obtain the density of screw dislocation, the rocking curve of (002) was obtained, and the component of edge dislocation was separated from the rocking curve of (102).
I referenced https://doi.org/10.1002/adma.202201169.
D=(FWHM)^2/4.35b^2
At this time, 5.185A, the c-axis length of GaN, was substituted for the burger's vector in the process of obtaining the screw dislocation density.
I am wondering if this method is correct? Because (002) is the size corresponding to 5.185 A/2.
Also, if you have any additional advice, any comments are welcome.
Hai Wr
To obtain dislocation information from X-ray diffraction (XRD) data, you can use the Rietveld method. This method helps to determine the crystal structure of a material by refining the XRD patterns until the best fit is achieved. Additionally, you can use FullProf software to analyze the data and calculate the lattice parameters, strain and dislocation densities.
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