On the synthesis and cation distribution of aluminum-substituted spinel-related lithium ferrite

H. M. Widatallah; C. Johnson; F. J. Berry; E. Jartych; A. M. Gismelseed; M. Pekala; J. Grabski

doi:10.1016/j.matlet.2004.12.017

On the synthesis and cation distribution of aluminum-substituted spinel-related lithium ferrite

H. M. Widatallah^*, C. Johnson, F. J. Berry, E. Jartych, A. M. Gismelseed, M. Pekala, J. Grabski

^*Corresponding author for this work

Physics

Research output: Contribution to journal › Article › peer-review

26 Citations (Scopus)

Abstract

Spinel-related Al-substituted Li_0.5Fe_2.5O₄ has been synthesized by sintering a mixture of Al-substituted corundum-related α-Fe₂O₃ and Li₂CO₃ at 700 °C which is ca. 450-500 °C lower than the temperatures normally used to prepare the material by conventional ceramic methods. The cation distribution in the material was investigated with X-ray diffraction, Mössbauer spectroscopy and magnetic measurements. Rietveld refinement of the X-ray diffraction data shows the Al³⁺ ions to substitute for both Fe ³⁺ and Li⁺ ions on octahedral B-sites while the displaced Li⁺ ions substitute for Fe³⁺ ones at tetrahedral A-sites. This structural model is consistent with Mössbauer and magnetic data.

Original language	English
Pages (from-to)	1105-1109
Number of pages	5
Journal	Materials Letters
Volume	59
Issue number	8-9
DOIs	https://doi.org/10.1016/j.matlet.2004.12.017
Publication status	Published - Apr 2005

Keywords

Ceramics
Mössbauer spectroscopy
Sintering
X-ray diffraction

ASJC Scopus subject areas

Materials Science(all)

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title = "On the synthesis and cation distribution of aluminum-substituted spinel-related lithium ferrite",

abstract = "Spinel-related Al-substituted Li0.5Fe2.5O4 has been synthesized by sintering a mixture of Al-substituted corundum-related α-Fe2O3 and Li2CO3 at 700 °C which is ca. 450-500 °C lower than the temperatures normally used to prepare the material by conventional ceramic methods. The cation distribution in the material was investigated with X-ray diffraction, M{\"o}ssbauer spectroscopy and magnetic measurements. Rietveld refinement of the X-ray diffraction data shows the Al3+ ions to substitute for both Fe 3+ and Li+ ions on octahedral B-sites while the displaced Li+ ions substitute for Fe3+ ones at tetrahedral A-sites. This structural model is consistent with M{\"o}ssbauer and magnetic data.",

keywords = "Ceramics, M{\"o}ssbauer spectroscopy, Sintering, X-ray diffraction",

author = "Widatallah, {H. M.} and C. Johnson and Berry, {F. J.} and E. Jartych and Gismelseed, {A. M.} and M. Pekala and J. Grabski",

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AU - Widatallah, H. M.

AU - Johnson, C.

AU - Berry, F. J.

AU - Jartych, E.

AU - Gismelseed, A. M.

AU - Pekala, M.

AU - Grabski, J.

PY - 2005/4

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N2 - Spinel-related Al-substituted Li0.5Fe2.5O4 has been synthesized by sintering a mixture of Al-substituted corundum-related α-Fe2O3 and Li2CO3 at 700 °C which is ca. 450-500 °C lower than the temperatures normally used to prepare the material by conventional ceramic methods. The cation distribution in the material was investigated with X-ray diffraction, Mössbauer spectroscopy and magnetic measurements. Rietveld refinement of the X-ray diffraction data shows the Al3+ ions to substitute for both Fe 3+ and Li+ ions on octahedral B-sites while the displaced Li+ ions substitute for Fe3+ ones at tetrahedral A-sites. This structural model is consistent with Mössbauer and magnetic data.

AB - Spinel-related Al-substituted Li0.5Fe2.5O4 has been synthesized by sintering a mixture of Al-substituted corundum-related α-Fe2O3 and Li2CO3 at 700 °C which is ca. 450-500 °C lower than the temperatures normally used to prepare the material by conventional ceramic methods. The cation distribution in the material was investigated with X-ray diffraction, Mössbauer spectroscopy and magnetic measurements. Rietveld refinement of the X-ray diffraction data shows the Al3+ ions to substitute for both Fe 3+ and Li+ ions on octahedral B-sites while the displaced Li+ ions substitute for Fe3+ ones at tetrahedral A-sites. This structural model is consistent with Mössbauer and magnetic data.

KW - Ceramics

KW - Mössbauer spectroscopy

KW - Sintering

KW - X-ray diffraction

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