Variable Temperature <sup>57</sup>Fe-Mössbauer Spectroscopy Study of Nanoparticle Iron Carbides

Variable Temperature <sup>57</sup>Fe-Mössbauer Spectroscopy Study of Nanoparticle Iron Carbides

Near-phase-pure nanoparticle iron carbides (Fe<sub>3</sub>C and Fe<sub>5</sub>C<sub>2</sub>) were synthesised. Debye model calculations were used with hyperfine parameters gathered by <sup>57</sup>Fe Mössbauer spectroscopy within a temperature range of...

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Main Authors: Alex Scrimshire, Alex L. Lobera, Roman Kultyshev, Peter Ellis, Susan D. Forder, Paul A. Bingham
Format: Article
Language:English
Published: Croatian Chemical Society 2015-12-01
Series:Croatica Chemica Acta
Online Access:http://hrcak.srce.hr/file/225616
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spelling doaj-3079eefb82aa43b7b4fb8237a93c69e12020-11-24T23:14:12ZengCroatian Chemical SocietyCroatica Chemica Acta0011-16431334-417X2015-12-0188453153710.5562/cca2782153187Variable Temperature <sup>57</sup>Fe-Mössbauer Spectroscopy Study of Nanoparticle Iron CarbidesAlex Scrimshire0Alex L. Lobera1Roman Kultyshev2Peter Ellis3Susan D. Forder4Paul A. Bingham5Materials and Engineering Research Institute, Sheffield Hallam University, City Campus, Howard Street, Sheffield, S1 1WB, UKEcole des Mines de Nantes, 4 Rue Alfred Kastler, BP 20722, 44307 Nantes Cedex 3, FranceJohnson Matthey Technology Centre, Sonning Common, Reading, West Berkshire, RG4 9NH, UKJohnson Matthey Technology Centre, Sonning Common, Reading, West Berkshire, RG4 9NH, UKMaterials and Engineering Research Institute, Sheffield Hallam University, City Campus, Howard Street, Sheffield, S1 1WB, UKMaterials and Engineering Research Institute, Sheffield Hallam University, City Campus, Howard Street, Sheffield, S1 1WB, UKNear-phase-pure nanoparticle iron carbides (Fe<sub>3</sub>C and Fe<sub>5</sub>C<sub>2</sub>) were synthesised. Debye model calculations were used with hyperfine parameters gathered by <sup>57</sup>Fe Mössbauer spectroscopy within a temperature range of 10 K to 293 K, with analysis providing Debye temperatures of 422 K and 364 K for two Fe sites in Fe<sub>5</sub>C<sub>2</sub> and 355 K for ferromagnetic Fe<sub>3</sub>C. The intrinsic isomer shifts were calculated as 0.45 mm s<sup>−1</sup> and 0.43 mm s<sup>−1</sup> for iron sites 1 and 2 respectively in Fe<sub>5</sub>C<sub>2</sub> and 0.42 mm s<sup>−1</sup> for Fe<sub>3</sub>C. Recoil-free fractions for the two iron sites were also calculated at f300 0.785 and 0.726 for site 1 and 2 respectively.http://hrcak.srce.hr/file/225616
collection DOAJ
language English
format Article
sources DOAJ
author Alex Scrimshire
Alex L. Lobera
Roman Kultyshev
Peter Ellis
Susan D. Forder
Paul A. Bingham
spellingShingle Alex Scrimshire
Alex L. Lobera
Roman Kultyshev
Peter Ellis
Susan D. Forder
Paul A. Bingham
Variable Temperature <sup>57</sup>Fe-Mössbauer Spectroscopy Study of Nanoparticle Iron Carbides
Croatica Chemica Acta
author_facet Alex Scrimshire
Alex L. Lobera
Roman Kultyshev
Peter Ellis
Susan D. Forder
Paul A. Bingham
author_sort Alex Scrimshire
title Variable Temperature <sup>57</sup>Fe-Mössbauer Spectroscopy Study of Nanoparticle Iron Carbides
title_short Variable Temperature <sup>57</sup>Fe-Mössbauer Spectroscopy Study of Nanoparticle Iron Carbides
title_full Variable Temperature <sup>57</sup>Fe-Mössbauer Spectroscopy Study of Nanoparticle Iron Carbides
title_fullStr Variable Temperature <sup>57</sup>Fe-Mössbauer Spectroscopy Study of Nanoparticle Iron Carbides
title_full_unstemmed Variable Temperature <sup>57</sup>Fe-Mössbauer Spectroscopy Study of Nanoparticle Iron Carbides
title_sort variable temperature <sup>57</sup>fe-mössbauer spectroscopy study of nanoparticle iron carbides
publisher Croatian Chemical Society
series Croatica Chemica Acta
issn 0011-1643
1334-417X
publishDate 2015-12-01
description Near-phase-pure nanoparticle iron carbides (Fe<sub>3</sub>C and Fe<sub>5</sub>C<sub>2</sub>) were synthesised. Debye model calculations were used with hyperfine parameters gathered by <sup>57</sup>Fe Mössbauer spectroscopy within a temperature range of 10 K to 293 K, with analysis providing Debye temperatures of 422 K and 364 K for two Fe sites in Fe<sub>5</sub>C<sub>2</sub> and 355 K for ferromagnetic Fe<sub>3</sub>C. The intrinsic isomer shifts were calculated as 0.45 mm s<sup>−1</sup> and 0.43 mm s<sup>−1</sup> for iron sites 1 and 2 respectively in Fe<sub>5</sub>C<sub>2</sub> and 0.42 mm s<sup>−1</sup> for Fe<sub>3</sub>C. Recoil-free fractions for the two iron sites were also calculated at f300 0.785 and 0.726 for site 1 and 2 respectively.
url http://hrcak.srce.hr/file/225616
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