It is known that W-H plot can be used to find crystallite size of nanoparticles. But, is it correct to follow the same method to find crystallite size of thin films?
You may use Debye-Scherrer formula.
The Debye-the Scherrer equation, D = Kλ / βCosθ, is used to calculate the crystallite size, where K represents the Scherrer constant (0.98), λ denotes the wavelength of X-ray, β denotes the full width at half maximum (FWHM).
Ali Hossain There is no such entity as the Debye-Scherrer equation. There are extensive discussions on RG to this effect. You’ve described the Scherrer equation…
Dear Gayatri,
the problem with thin films is that the shape of the diffraction lines can be influenced by mechanical constraints for example. But in practice, the size of the crystallites evaluated by Scherrer is generally not very different from the size of the crystallites that can be observed by microscopy techniques. You may be interested in the attached publication.
Sincerely.
Philippe.
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