formula to calculate lamellar d spacing from XRD
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This is a too-general question that suggests you need to attend an X-ray diffraction/crystallography/materials characterization course before dealing with your XRD data.... Without any knowledge of crystallography or X-ray diffraction any explanation will be useless since the terms used in it may be away from your ability to understand them.
The first question I'd ask to adjust the answer to your needs is: What have you parepared your sample for and what do you need to know from it? If you need to know the lattice parameters of your newly prepared sample it depends on how "new" your sample is. If you can associate your XRD pattern with a previusly known phase (i.e. your sample is isostructural with some other know phase) then indexing and determining cell parameters is rather easy, just what T. Chatterji explained. But if your sample is a completely new phase and there is no previous knowledge about possible structure then detemining cell parameters may well be a project of its own and may require you to collect high-resolution synchrotron x-ray diffraction data...
So, if you give some more detail about your problem, not about the sample itself but if you have an expected structure, if this is a new composition or not, if it is similar to others, etc. that may help us guide you in indexing your pattern.
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The first question I'd ask to adjust the answer to your needs is: What have you parepared your sample for and what do you need to know from it? If you need to know the lattice parameters of your newly prepared sample it depends on how "new" your sample is. If you can associate your XRD pattern with a previusly known phase (i.e. your sample is isostructural with some other know phase) then indexing and determining cell parameters is rather easy, just what T. Chatterji explained. But if your sample is a completely new phase and there is no previous knowledge about possible structure then detemining cell parameters may well be a project of its own and may require you to collect high-resolution synchrotron x-ray diffraction data...
So, if you give some more detail about your problem, not about the sample itself but if you have an expected structure, if this is a new composition or not, if it is similar to others, etc. that may help us guide you in indexing your pattern.
ans by---love Guru
plz follow me
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