Characterization of Structural Properties of LiM_xFe_{5-x}O_8 (M=Al, Cr, Mn), Spinel Solid Solutions

• Authors: J. Darul
• Languages of publication: EN

Abstracts

EN

The structural properties of series spinel oxides with the general formula, LiM_{0.5}Fe_{4.5}O_8 (M = Mn, Cr, Al), are investigated. The effect of limited substitution of manganese, chromium and aluminum ions in the lithium ferrite samples on the order-disorder phase transition in the spinel crystal lattice at room temperature is presented. In these materials it is found that the ordered structures have not been isolated as single phases under the present experimental conditions and this fact will certainly influence the magnetic behavior of the compounds. The Rietveld refinements of the synchrotron X-ray diffraction data revealed that transition metal ions hinders the ordering process and Al^{3+} ion was shown to be least effective in removing of order.

Keywords

EN

82.33.Pt; 61.43.-j; 61.50.Ks; 61.05.cp

Discipline

• 61.43.-j: Disordered solids(see also 81.05.Gc Amorphous semiconductors, 81.05.Kf Glasses, and 81.05.Rm Porous materials; granular materials in materials science; for photoluminescence of disordered solids, see 78.55.Mb and 78.55.Qr)
• 61.05.cp: X-ray diffraction
• 82.33.Pt: Solid state chemistry
• 61.50.Ks: Crystallographic aspects of phase transformations; pressure effects(see also 81.30.Hd in materials science)

• Journal: Acta Physica Polonica A
• Year: 2008
• Volume: 114
• Issue: 2
• Pages: 367-373

Dates

published

2008-08

received

2007-09-24

Contributors

author

J. Darul

• Faculty of Chemistry, Adam Mickiewicz University, Grunwaldzka 6, PL-60-780 Poznań, Poland

References

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Identifiers

DOI

10.12693/APhysPolA.114.367