Synthesis, structural, and magnetic characterisation of magnesium-doped lithium ferrite of composition Li0.5Fe2.5O4

Hisham M. Widatallah; Clive Johnson; Frank Berry; Marek Pekala

doi:10.1016/S0038-1098(01)00327-1

Synthesis, structural, and magnetic characterisation of magnesium-doped lithium ferrite of composition Li_0.5Fe_2.5O₄

Hisham M. Widatallah, Clive Johnson, Frank Berry^*, Marek Pekala

^*Corresponding author for this work

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

66 Citations (Scopus)

Abstract

Spinel-related magnesium-doped Li_0.5Fe_2.5O₄ has been synthesised by heating magnesium-substituted corundum-related α-Fe₂O₃ with Li₂CO₃ at 600°C which is ca. 600°C lower than the temperature normally used to prepare metal-doped Li_0.5Fe_2.5O₄ by conventional sintering methods. Rietveld structure refinement of the X-ray powder diffraction data shows that the Mg²⁺ ions substitute for Fe³⁺ ions on the tetrahedral sites whilst the Li⁺ ions are located on the octahedral sites. The ⁵⁷Fe Mössbauer spectrum and magnetic measurements are consistent with this structural model.

Original language	English
Pages (from-to)	171-175
Number of pages	5
Journal	Solid State Communications
Volume	120
Issue number	4
DOIs	https://doi.org/10.1016/S0038-1098(01)00327-1
Publication status	Published - Oct 1 2001
Externally published	Yes

Keywords

A. lithium ferrite
A. magnetic properties
C. X-ray diffraction

ASJC Scopus subject areas

General Chemistry
Condensed Matter Physics
Materials Chemistry

Access to Document

10.1016/S0038-1098(01)00327-1

Cite this

@article{f9e4eb1c10b5470b9dbe78d94f0495a8,

title = "Synthesis, structural, and magnetic characterisation of magnesium-doped lithium ferrite of composition Li0.5Fe2.5O4",

abstract = "Spinel-related magnesium-doped Li0.5Fe2.5O4 has been synthesised by heating magnesium-substituted corundum-related α-Fe2O3 with Li2CO3 at 600°C which is ca. 600°C lower than the temperature normally used to prepare metal-doped Li0.5Fe2.5O4 by conventional sintering methods. Rietveld structure refinement of the X-ray powder diffraction data shows that the Mg2+ ions substitute for Fe3+ ions on the tetrahedral sites whilst the Li+ ions are located on the octahedral sites. The 57Fe M{\"o}ssbauer spectrum and magnetic measurements are consistent with this structural model.",

keywords = "A. lithium ferrite, A. magnetic properties, C. X-ray diffraction",

author = "Widatallah, {Hisham M.} and Clive Johnson and Frank Berry and Marek Pekala",

note = "Funding Information: We thank the Gordon Memorial College Trust Fund (HMW) and the Polish Committee for Scientific Research (MP) for financial support.",

year = "2001",

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doi = "10.1016/S0038-1098(01)00327-1",

language = "English",

volume = "120",

pages = "171--175",

journal = "Solid State Communications",

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TY - JOUR

T1 - Synthesis, structural, and magnetic characterisation of magnesium-doped lithium ferrite of composition Li0.5Fe2.5O4

AU - Widatallah, Hisham M.

AU - Johnson, Clive

AU - Berry, Frank

AU - Pekala, Marek

N1 - Funding Information: We thank the Gordon Memorial College Trust Fund (HMW) and the Polish Committee for Scientific Research (MP) for financial support.

PY - 2001/10/1

Y1 - 2001/10/1

N2 - Spinel-related magnesium-doped Li0.5Fe2.5O4 has been synthesised by heating magnesium-substituted corundum-related α-Fe2O3 with Li2CO3 at 600°C which is ca. 600°C lower than the temperature normally used to prepare metal-doped Li0.5Fe2.5O4 by conventional sintering methods. Rietveld structure refinement of the X-ray powder diffraction data shows that the Mg2+ ions substitute for Fe3+ ions on the tetrahedral sites whilst the Li+ ions are located on the octahedral sites. The 57Fe Mössbauer spectrum and magnetic measurements are consistent with this structural model.

AB - Spinel-related magnesium-doped Li0.5Fe2.5O4 has been synthesised by heating magnesium-substituted corundum-related α-Fe2O3 with Li2CO3 at 600°C which is ca. 600°C lower than the temperature normally used to prepare metal-doped Li0.5Fe2.5O4 by conventional sintering methods. Rietveld structure refinement of the X-ray powder diffraction data shows that the Mg2+ ions substitute for Fe3+ ions on the tetrahedral sites whilst the Li+ ions are located on the octahedral sites. The 57Fe Mössbauer spectrum and magnetic measurements are consistent with this structural model.

KW - A. lithium ferrite

KW - A. magnetic properties

KW - C. X-ray diffraction

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