I made a spinel oxide sample AB2O4 which is reported to be in mixed phase and has inversion parameter, depending on which it is determined how much inverse spinel the sample to be in. Now, it is just reported in papers that A2+ resides by "x"% in octahedral site and "Y" % in tetrahedral site, both the time in state A2+. I have fitted the XPS with A2+ . Now, how will I calculate how much of it resides in tetrahedral or octahedral site?
If you have just one single peak for your A2+, the chemical shifts are so small that you can't differentiate between the components by XPS. Don't you have XRD available in order to learn that first?
Could you show us the shape of your peak? If it's asymmetric, there may be an actual effect that might provide your result.
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