Dear Professor Lee: This is a mailing list for discussion of the XAFS analysis programs based on Ifeffit. There is very nice web page with tutorials at http://cars9.uchicago.edu/ifeffit/ I suggest that you begin by looking at some tutorials, download the analysis programs and then you certainly will have some specific questions about your problem. If you prefer to collaborate with someone on your data, I am sure that there are a number of local experts at the Korean synchrotron whom you can consult. Good Luck! Carlo On Fri, 18 Jun 2004, Gang Ho Lee wrote:

Dear Sirs

I am writing to you because we are not familiar with xanes. We took xanes spectra of both sample (synthesized by us and we think it as gamma-Mn2O3 ) and Mn3O4 (reference) to make sure that we synthesized gamma-Mn2O3 nanoparticles. The particle diameters ranged from 10 to 15 nm. By using XRD pattern, the structure of sample was determined to be tetragonal with lattice constants of a=5.79 A and c=9.4 A, similar to Mn3O4. From the XRD patterns, we can not distinguish between gamma-Mn2O3 and Mn3O4 because both show nearly identical XRD patterns (JACS 72, 856 (1950)).

We attached a data file. Could you please tell us whether the sample is gamma-Mn2O3 nanoparticles or not.

Sincerely,

Prof. Gang Ho Lee Department of Chemistry College of Natural Sciences Kyungpook National University Taegu 702-701, South Korea tel: 001-82-53-950-5340 fax: 001-82-53-950-6330 e-mail: ghlee@bh.knu.ac.kr

-- Carlo U. Segre -- Professor of Physics Associate Dean for Special Projects, Graduate College Illinois Institute of Technology Voice: 312.567.3498 Fax: 312.567.3494 segre@agni.phys.iit.edu http://www.iit.edu/~segre