Hyperfine Interaction Parameters in Fe_{28}Al_{72}: ^{57}Fe Mössbauer Spectroscopy and Ab Initio Study

• Authors: A. Hanc , J. Deniszczyk , J. Kansy
• Languages of publication: EN

Abstracts

EN

The paper discusses a theoretical model that associates the shape of the Mössbauer spectrum with the configuration of atoms in local surroundings of the Mössbauer nuclide. Using the model we analyse the Mössbauer spectra of Fe_{72}Al_{28} alloys after various heat treatments. Basing on the model calculations the hyperfine structure parameters describing an effect of an Al atom in the first and the second coordination shell of ^{57}Fe atom are evaluated. Using these parameters the values of hyperfine magnetic field and isomers shift for the atomic configurations present in stoichiometric Fe_3Al are estimated and compared with the results of ab initio calculations.

Keywords

EN

76.80.+y; 61.05.Qr; 71.20.-b

Discipline

• 71.20.-b: Electron density of states and band structure of crystalline solids
• 76.80.+y: Mössbauer effect; other γ-ray spectroscopy(see also 33.45.+x Mössbauer spectra—in atomic and molecular physics; for biophysical applications, see 87.64.kx; for chemical analysis applications, see 82.80.Ej)
• 61.05.Qr: Magnetic resonance techniques; Mössbauer spectroscopy (for structure determination only)

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2012
• Volume: 121
• Issue: 5-6
• Pages: 1154-1155

Dates

published

2012-05

Contributors

author

A. Hanc

• Institute of Materials Science, University of Silesia, Bankowa 12, 40-007 Katowice, Poland

author

J. Deniszczyk

• Institute of Materials Science, University of Silesia, Bankowa 12, 40-007 Katowice, Poland

author

J. Kansy

• Institute of Materials Science, University of Silesia, Bankowa 12, 40-007 Katowice, Poland

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Identifiers

DOI

10.12693/APhysPolA.121.1154