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Samples for XPS (ESCA)... how much?

Posted by Roberto Bracco  
Samples for XPS (ESCA)... how much?
February 20, 2012 10:05AM
Hi all,
I have been suggested to run an XPS / ESCA analysis on a new mineral to have an independent evaluation of oxidation states of elements inside.
Of course... material is very scarce and before sacrificing more crystals it would be great if I could use a grain I already probed for preliminary SEM-EDS work. It is a 30 um crystal mounted on graphite gel and coated with evaporated graphite.
Is there anyone familiar with this technique? Could crystal size and coating be an issue for analysis?
Re: Samples for XPS (ESCA)... how much?
February 20, 2012 06:41PM
    
Do you know the crystal structure? If yes, bond-valence calculations might be sufficient.
(What elements are we talking about? Feel free to send PM.)
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