Mossbauer Investigation of the Chelyabinsk Meteorite Fragment

Abstract:

The article devoted to study of the fragments of Chelyabinsk meteorite with the help of Mossbauer spectroscopy. It is shown that the iron in various fragments of the meteorite exist in different crystallographic, physical and chemical conditions. A new phenomenon of sharp increasing effective magnetic field in the region of the iron nuclei in the temperature range of 553-573 К and jumps of the main parameters of Mossbauer spectra at other temperatures are observed. According to the data of the isomer shifts and quadruple splitting of the individual spectra, iron ions have a valence of Fe²⁺ − 3d⁶, Fe³⁺ − 3d⁵, Fe⁴⁺ − 3d⁴, Fe⁶⁺ − 3d² and also intermediate between them. A qualitative explanation of the experimental data is proposed.

• Periodical: Materials Science Forum (Volume 845)
• Pages: 269-272
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.845.269
• Online since: March 2016
• Authors: Magomed Guseynov, Sergey Taskaev*, Ibragimkhan Kamilov
• Keywords: Iron Valence, Meteorite “Chelyabinsk”, Mössbauer Spectroscopy

References

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[2] M.U. Larionov, Mossbauer spectroscopy high speed resolution phosphate crystals (Fe, Ni)3P Sikhote-Alin meteorite, PhD thesis, Ekaterinburg, (2012).

[3] O. Popova et al. Chelyabinsk Airburst, Damage Assessment, Meteorite Recovery, and Characterization, Science, 342 (2013) 1069-1073.