i measured XRD of some dielectric material powder. it has sphere structure. it has very simple and wide xrd peaks. what factors influence width of peak in XRD?.
Dear Jeong,
please have a look at the section 'size and strain broadening' of the attached link.
You may have very small crystallites in the lower nm region.
May we have a look at your diffractogram(s)?
https://en.wikipedia.org/wiki/Powder_diffraction
Dear Jeong,
please have a look at the section 'size and strain broadening' of the attached link.
You may have very small crystallites in the lower nm region.
May we have a look at your diffractogram(s)?
https://en.wikipedia.org/wiki/Powder_diffraction
Dear Jeong Seong Hyeon,
XRD peak width or XRD peak broadening is constituted by
(1) Instrumental effects. Eg: Imperfect focusing, Unstripped Ka2, etc.
(2) Crystallite size. The Smaller the crystallites, the broader the peaks. Scherrer formula is commonly used for calculating crystallite size.
(3) Lattice strain: Crystal lattice strain broadening., that could be determined using Williamson-Hall plot.
Source: X-Ray diffraction: A Practical Approach by C. Suryanarayana and M.G. Norton
There are four factors: 1) Crystallite dimensions, 2) thermal movement of atoms around their equilibrium positions, 3) Atoms outside of their ideal position, zero, 1 and 2 dimensional defects, 4) Aberrations caused by the optics of the diffractometer.
Thanks Gerhard Martens, Anas N S and Xim Bokhimi. Yours answers were helpful to me!!
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