Hi Khaled,

you have to use some amorphous material such as gelatin or agar for example; so you will only have a broad background due to gelatin / agar.

Please see the links for gelatin and agar  XRD.  

https://www.researchgate.net/figure/276161922_fig2_Fig-3-X-ray-diffraction-XRD-patterns-of-gelatin-and-gelatin-based-nanocomposite-fi

https://www.researchgate.net/figure/272382143_fig2_Fig-3-X-ray-diffraction-XRD-patterns-of-control-and-agar-mediated-AuNPs-2-mL

Thanks Dr Gerhard Martens for your answer

Hi!

Without any material you can make a fiber film just by modifying your XRD sample holder. 

Refer : M. Kakudo, N. Kasai, X-ray Diffraction by Polymers, Elsevier

Publishing Company, New York, 1972, p. 184, 255, 375.

Thanks B. Mallick 

Your reference is book and I can not loaded