I have two XRD graphs one of pristine Metal Oxide and other of Heterostructure by using the same metal oxide now both the XRD Pattern showing the same type of pattern what could be the possible reason for that?
The first question is: the heterostructure is composed by what? There is the metal oxide and carbon? In this case if carbon is amorphous there are no new peaks but only a change in background, also depending from its amount...you should provide more information about your samples
Dear Ghulam Mustafa ,
in addition to the answer of Marcella Bini ,
I would like to add, that when you have the same ingredients in both samples you should get similar XRD pattern. There might be artifacts due to preferred orientation in the heterostructure sample, which will affect the peak height distribution.
Other expected differences (and some literature) are given in the answers of:
https://www.researchgate.net/post/How_to_differentiate_between_a_physical_mixture_and_a_heterostructure_from_XRD_spectra.
According to one of the answers with respect to superlattice reflections (potentially caused by the heterostructure), you should have a look at the very low 2theta range. Peaks due to large d-spacings show up at low 2theta.
Best regards
G.M.
Could you provide images of your "XRD graphs"? There is too many things we do not know about what you are asking, so that we can only assume what the potential issue/explanation is.
When you say "graph" do you mean a powder diffraction diffractogram?
What do the two diffractograms look like? Do you have files you can upload so I could plot them and superimpose them? Which metal oxide? What "heterostructure"?
The only thing I can think of when it comes to PXRD patterns that consist of two components but only shows the diffraction peaks of one is that the other component does not have a regular lattice. This would mean that either your second component is inherently amorphous or that you are perhaps melting/milling your mixture so that only the "heterostructure" amorphizes into something like a glass (or another type of amorphous solid).
Do you have PXRDs of the pure metal-oxide and the pure second component? Is the second component already amorphous before your create your "heterostructure"?
TL;DR: You probably have two phases, one of which stays the same and the other is amorphous. You you have a heterogenous mixture of a crystalline and a non-crystalline component.
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