What is the reason behind XRD plot start from below base and after some angle it will reach to higher base?

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Marcella Bini

Can you better explain your question please? You mean an increase in background?

Gerhard Martens

In addition to the remark of Marcella Bini ,

you may share a typical XRD pattern which you are talking about and explain the issue.

As Marcella, I think, your issue is the background.

Unfortunately ferrite samples contain Fe and thus, when dealing with a Cu tube, you may suffer from background due to Fe K-fluorescence; unless you make use of some kind of monochromator in front of the detector.

Another way to get rid of the Fe fluorescence background is to use for example a Co, Fe or Cr source. The photon energy of their K-lines are lower than the K-edge energy of Fe, and thus no K-shell excitation of Fe will occur...

Best regards

G.M.