Want to understand why the 331 X-ray diffraction peak of Zn-ferrite nanoparticles is extincted whereas no cations inversion is detected by Neutron diffraction.
Please have a look at the discussion here:
https://www.researchgate.net/post/Do_you_know_why_the_331_diffraction_peak_is_not_observed_with_Zn-ferrites_spinel
In short: it is a matter of noise in high background of the XRD pattern, which unfortunately in most cases is measured via Cu based tube. The tiny 331 peak is burried in the noise of the Fe K-fluorescence background.
Please use a Co- or a Fe-based x-ray tube.
Thanks a lot, first for realizing that we were speaking of the 331 diffraction peak and then for the proposed explanation for its absence. I will remeasure the diffraction with a Mo-source or ask for time of access on a synchrotron.
Regards
Anne Davidson
Thanks a lot, first for realizing that we were speaking of the 331 diffraction peak and then for the proposed explanation. I will remeasure the diffraction with a Mo-source or ask for time of access on a synchrotron to check.
Regards
Anne Davidson
Thanks a lot for the proposed explanation. I will remeasure the diffractogram with a Mo-source or ask for time of access on a synchrotron to check.
Regards
Anne Davidson
Dear Anne,
I fear that a Mo source does not really solve the Fe background issue.
Mo k-alpha (and bremskontinuum of Mo tube) is able to excite Fe fluoresecence.
However it is far better than a Cu source.
You should use a Co (Cobalt) source or a synchrotron as you suggested (photon energy below Fe K-edge energy).
Remark: there is bug in the RG editing system, so multiple answers having the same content are showing up.
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