I want to know what endothermic peaks give nono ferrite type of samples. I got 3 peaks, how can I explain them?
Be more specific.. Ferrite is a generic term, it can be Co, Ni, Zn or many more alloy ferrites..
generally, the endothermic peaks correspond either to crystallization, recrystallization or a phase change. for each phase, there could be nanoscale samples. Structural analysis (XRD, TEM) can confirm.
madjid thank you.. so I got 3 peaks means 3 phases are formed. But from XRD I got only single phase formation.can u explain more if possible.
Peaks around 149.35 , 155.88, 165.01
out of these peaks 165.01 is highest intensity peak
155.88 is very small peak
I suggest this peaks are mainly due to crystal rearrangement or may be removal of water molecules in crystal structure. It is not common in phase transformation in this low temperatures. If you assume, it due to phase transformation, you can treat your sample in this temperatures and do XRD analysis. Or you also can do XRD analysis with temperatures. Modern instrument already have this facility. So you can get idea about this. Your endothermic peaks mainly appears in very small temperature deference, i.e. around 16 C difference. So, I think it mainly crystal rearrangement or removal of water molecules
If you have any complex sample, endotermic picks can be degredation picks, wather picks e.g. If you have any pure sample , it can be either phase transformation or melting temperature for sample.
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