I do not understand well your question. A doped material has a different composition with respect to the original one, a nanomaterial has low sizes, reflecting in the peak broadening of the pattern. The doping could produce variation in peak positions and/or peaks integrated intensities. Which is your right request?

doping: Doping is the process of adding some impurity atoms in a pure or (intrinsic) semiconductor/ in other words, When you substitute some atoms in a compound to replace host atoms in an element. Like ZnO, if you want dope Co on Zn side so it will be like Zn1-xCoxO.

Composite: Mixing of two different compounds

You will obviously see another phase forming in XRD data for composite.

Thank you Sir Theerapong Santhaveesuk Rajwali Khan