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Analysis of Mössbauer spectra of silicate glasses using a two-dimensional Gaussian distribution of hyperfine parameters

Authors: H. V. Alberto, J. L. Pinto da Cunha, B. O. Mysen, J. M. Gil and N. Ayres de Campos

Ref.: J. Non-Cryst. Solids 194, 48-57 (1996)

Abstract: A new method is proposed to evaluate the hyperfine parameter distribution in Mossbauer spectra of silicate glasses. The method assumes a distribution of isomer shift and quadrupole splitting with a two-dimensional Gaussian shape. Application of the method to Mossbauer spectra of CaO-SiO2-Fe-O glasses containing different redox ratios, Fe3+/Fe2+, is discussed. It is shown that the two-dimensional Gaussian distribution method leads to a very good description of the data with a relatively small number of free parameters.

DOI: 10.1016/0022-3093(95)00463-7