> The next step would be quantify these phases by Rietveld method using TOPAS 3.0.
BTW, it shouldn't need a sophisticated Rietveld refinement to distinguish between the relative quantities of simple FCC and BCC compounds - some peaks may overlap almost completely, but others not at all. I worry that people rely so much on databases and computer programmes, and so little on thinking. Alan. ______________________________________________ Dr Alan Hewat, NeutronOptics, Grenoble, FRANCE <[EMAIL PROTECTED]> +33.4220.127.116.11 http://www.NeutronOptics.com/hewat ______________________________________________