[Ifeffit] Reagrding Xanes spectra of manganese oxides

Gang Ho Lee ghlee at bh.knu.ac.kr
Thu Jun 17 18:49:47 CDT 2004


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 at bh.knu.ac.kr
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