> I am looking for cif files for austenite and I > didnt find it in WEB free database or in ICSD database.
Frank is quite correct here. Austenite is gamma-iron, which you can find immediately with Google or Wikipedia: http://en.wikipedia.org/wiki/Austenite Small amounts of carbon or hydrogen dissolved in gamma-iron, as reported in ICSD, is not going to change the X-ray pattern, since Fe-scattering will dominate. ICSD only reports what people publish. I believe the 1970 X-ray paper on austenite listed in ICSD only reports the lattice constants, and doesn't actually claim to locate the carbon. Alan. ______________________________________________ Dr Alan Hewat, NeutronOptics, Grenoble, FRANCE <[EMAIL PROTECTED]> +33.422.214.171.124 http://www.NeutronOptics.com/hewat ______________________________________________