Say, my thin film is AB(C,D)2. How do I identify the secondary phases from SEM and XRD? Can anyone give me any hint about how to notice the secondary phase by seeing an SEM image? Thanks in advance.
Under the SEM you may differentiate between two phases if either of them is insulating. Otherwise you must do EDS. Of course, you can identify with appearance of additional peaks.
Hello,
If you want to identify the secondary phases by SEM, you need to perform the EDS analysis only then you can identify the chemical composition and elemental percent.
And, in XRD, any unusual peaks rather then that of material (check from JCPRD), then you can clearly identify the additional peaks or secondary phases (in case of doped material/impure synthesis). In general, secondary phases arise as a result of impurity/doping/composites etc.
From SEM you are got on Photo of backscattered secondary electrons (BSE ) in additionto, energy dispersive spectroscopy (EDS) will gaving you typical optical absorption peaks. as for XRD analysis will gaving you typical optical absorption peaks.
I hope you benefit from my opinion
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