Dear Research Community,
I am analyzing my XRD data using the Williamson-Hall (W-H) method to estimate crystallite size and lattice strain. However, I am getting a negative slope in my W-H plot, which is unexpected.
I would like to understand:
Any insights, references, or similar experiences would be greatly appreciated!
Looking forward to your valuable suggestions.
Dr Dennish Babu
Dear Sahaya Dennish Babu George ,
just a comment;
as far as I know, the negative slope reflects compressive strain.
Negative slopes in W-H plot are rare but one can find some.
See for example Fig. 2 in
Article Effect of Pd ion doping in the band gap of SnO2 nanoparticle...
But I cannot tell you why you have compressive strain.
You should share more details about your sample system...
Best regards
G.M.
My Sample is NaLa(MoO4)2 - Nanophosphors prepared by Hydrothermal method.
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