Investigation of Multiparticle Atomic Correlations in Alpha-Fe sub 1--x Si sub 2 by Mossbauer Spectroscopy

A method of experimental investigation of the parameters of multiparticle atomic correlations based on the Mossbauer spectra of the samples investigated has been developed. The presentation of complex spectra as a superposition of simple subspectra, determined by the local environment of resonant nu...

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Published in:The Journal of physics and chemistry of solids 1982-01, Vol.43 (3), p.297-303
Main Authors: Sidorenko, F A, Gel'd, P V, El'ner, V A, Ryzhenko, V B
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Gel'd, P V
El'ner, V A
Ryzhenko, V B
description A method of experimental investigation of the parameters of multiparticle atomic correlations based on the Mossbauer spectra of the samples investigated has been developed. The presentation of complex spectra as a superposition of simple subspectra, determined by the local environment of resonant nuclei, makes it possible to evaluate the existence of different atomic configurations, centered on the resonant nucleus. The methods of probability expansion, in a series of correlation moments, permit the latter to be evaluated. The method is used to analyze vacancy ordering and clarify its nature in the highest iron silicide alpha -Fe sub 1--x Si sub 2 . The correlation parameters in vacancy distribution, including the multiparticle ones, are determined. These data were used to calculate energies of atomic interactions according to the method of cluster variations. 19 ref.--AA
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title Investigation of Multiparticle Atomic Correlations in Alpha-Fe sub 1--x Si sub 2 by Mossbauer Spectroscopy
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