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Self propagating high temperature synthesis of magnesium zinc ferrites (MgxZn1-xFe2O3): thermal imaging and time resolved X-ray diffraction experiments

Spiers, H; Parkin, I P; Pankhurst, Q A; Affleck, L; Green, M; Caruana, D J; Kuznetsov, M V; Yao, J; Vaughan, G and Terry, A, et al. (2004) In Journal of Materials Chemistry 14(7). p.1104-1111
Abstract
Spinel ferrites of the form MgxZn1-xFe2O4 ( x = 0. 0.25, 0.50, 0.75, 1.00) were prepared by self-propagating high-temperature synthesis (SHS) from reactions of iron(III), zinc and magnesium oxides, iron powder and sodium perchlorate. The driving force for the reactions is the oxidation of iron powder. Reactions were carried out in the presence of an external magnetic field of 0.2 or 1.1 T. Reaction velocity and temperatures were obtained by thermal imaging camera. The transformation of reactants to products was studied by time resolved X-ray diffraction using Rietveld refinement for determination of phase percentages. Reactions typically reached temperatures in excess of 1150 degreesC with a timescale of complete conversion of reactant to... (More)
Spinel ferrites of the form MgxZn1-xFe2O4 ( x = 0. 0.25, 0.50, 0.75, 1.00) were prepared by self-propagating high-temperature synthesis (SHS) from reactions of iron(III), zinc and magnesium oxides, iron powder and sodium perchlorate. The driving force for the reactions is the oxidation of iron powder. Reactions were carried out in the presence of an external magnetic field of 0.2 or 1.1 T. Reaction velocity and temperatures were obtained by thermal imaging camera. The transformation of reactants to products was studied by time resolved X-ray diffraction using Rietveld refinement for determination of phase percentages. Reactions typically reached temperatures in excess of 1150 degreesC with a timescale of complete conversion of reactant to products of 20 s. All materials were characterised by X-ray powder diffraction (XRD), energy dispersive X-ray analysis (EDXA), scanning electron microscopy (SEM), Fourier-transform infrared spectroscopy (FTIR), Mossbauer spectroscopy and vibrating sample magnetometry (VSM). (Less)
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publication status
published
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Journal of Materials Chemistry
volume
14
issue
7
pages
1104 - 1111
publisher
Royal Society of Chemistry
external identifiers
  • scopus:11144354793
ISSN
1364-5501
DOI
10.1039/b314159b
language
English
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yes
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18cfe487-d101-4845-87da-b22ddf0906b7 (old id 140935)
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2007-07-13 16:14:30
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2017-10-01 03:48:31
@article{18cfe487-d101-4845-87da-b22ddf0906b7,
  abstract     = {Spinel ferrites of the form MgxZn1-xFe2O4 ( x = 0. 0.25, 0.50, 0.75, 1.00) were prepared by self-propagating high-temperature synthesis (SHS) from reactions of iron(III), zinc and magnesium oxides, iron powder and sodium perchlorate. The driving force for the reactions is the oxidation of iron powder. Reactions were carried out in the presence of an external magnetic field of 0.2 or 1.1 T. Reaction velocity and temperatures were obtained by thermal imaging camera. The transformation of reactants to products was studied by time resolved X-ray diffraction using Rietveld refinement for determination of phase percentages. Reactions typically reached temperatures in excess of 1150 degreesC with a timescale of complete conversion of reactant to products of 20 s. All materials were characterised by X-ray powder diffraction (XRD), energy dispersive X-ray analysis (EDXA), scanning electron microscopy (SEM), Fourier-transform infrared spectroscopy (FTIR), Mossbauer spectroscopy and vibrating sample magnetometry (VSM).},
  author       = {Spiers, H and Parkin, I P and Pankhurst, Q A and Affleck, L and Green, M and Caruana, D J and Kuznetsov, M V and Yao, J and Vaughan, G and Terry, A and Kvick, Åke},
  issn         = {1364-5501},
  language     = {eng},
  number       = {7},
  pages        = {1104--1111},
  publisher    = {Royal Society of Chemistry},
  series       = {Journal of Materials Chemistry},
  title        = {Self propagating high temperature synthesis of magnesium zinc ferrites (MgxZn1-xFe2O3): thermal imaging and time resolved X-ray diffraction experiments},
  url          = {http://dx.doi.org/10.1039/b314159b},
  volume       = {14},
  year         = {2004},
}