I have taken SAED pattern of an alumina sample. It is showing that the sample is a single crystal in that area. I attached the electron diffraction images below. Could youu suggest me how to calculate the d values?
I suggest you to use CrysTBox (https://www.fzu.cz/en/crystbox) which is a free Crystallographic Toolbox. You must fill the application form (https://www.fzu.cz/en/crystbox-order-form) then they will send you the software.
After installation, open it and run diffractGUI, then open your image from file > open image. you can adjust your image from image menu. You must provide a reference crystallographic file, fortunately in this case the software already has Alumina in its cell data. Just open up the Material drop down, go to Avogadro folder and find it in Oxides folder. In case you need to analyze another material that is not there, you must find its .cif file from Crystallography Open Database (http://www.crystallography.net/) and convert to .cell file using software like VESTA or CrystallMaker.
Now you are ready to start your analysis, use CrysTBox documentation for more information.
https://www.youtube.com/watch?v=sBWaETl2h54
Watch this video to know the process
This is a tutoriall on calculation of d-spacing in high resolution TEM images (HRTEM) using GATAN DIGITAL MICROGRAPH software
https://www.youtube.com/watch?v=6omOwczpXAs
Read this article if you want to use SAED PATTERN INDEXING USING JEMS software.
If you know the distance between two bright spot, you can use this link to calculate the d-spacing
https://instanano.com/characterization/theoretical/saed-d-value-calculation-2/
SAED calculation can easily be done from here,
https://instanano.com/characterization/calculator/tem/saed-d-value/
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