In the picture named "Major phase", phase 4 matched the strongest diffraction peak in the pattern, whereas phase 1 shown the highest content according to the semi-quantitative result (for example, if the diffraction pattern contain about 50wt% phase 1 and 35wt% phase 4). My question was: which phase was the major phase in the diffraction pattern, phase 1 or phase 4?
I also had another question. In the picture "Major phase", phase 5 matched only one diffraction peak, could this indicate the presence of phase 5? If the matched peak was not the 3 strong peaks or 8 strong peaks?
With the term major phase it is intended the most abundant phase present in the sample. To decide that a phase is present in the sample I think that only one peak is not sufficient, in particular only one at about 50° as in your case, a very high angle for a first peak of a phase, apart from cubic phases.
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