[Ifeffit] question about Eo and simultaneous fitting

Hi, first I would like to thank all experienced people answering in this forum!! I have learned really a lot from you. And now my question: Should I fit EXAFS spectra of a doped material and the same material, but oxidized and reduced (three spectra) simultaneously? In my opinion: yes, as I am looking for small differences. Is varying one Eo for the three samples the right approach? I am also wondering, should I vary one Eo for samples with different doping concentrations? Thank you for any hint! Tony ____________________________________________________________________________________ It's here! Your new message! Get new email alerts with the free Yahoo! Toolbar. http://tools.search.yahoo.com/toolbar/features/mail/