synthesis of lithium ferrites from polymetallic carboxylates

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ID: 157552
2008
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Abstract
Lithium ferrite was prepared by the thermal decomposition of three polynuclear complex compounds containing as ligands the anions of malic, tartaric and gluconic acid: (NH4)2[Fe2.5Li0.5(C4H4O5)3(OH)4(H2O)2]×4H2O (I), (NH4)6[Fe2.5Li0.5(C4H4O6)3(OH)8]×2H2O (II) and (NH4)2[Fe2.5Li0.5(C6H11O7)3(OH)7] (III). The polynuclear complex precursors were characterized by chemical analysis, IR and UV–Vis spectra, magnetic measurements and thermal analysis. The obtained lithium ferrites were characterized by XRD, scanning electron microscopy, IR spectra and magnetic measurements. The single α-Li0.5Fe2.5O4 phase was obtained by thermal decomposition of the tartarate complex annealed at 700 °C for 1 h. The magnetization value ≈ 50 emu g-1 is lower than that obtained for the bulk lithium ferrite due to the nanostructural character of the ferrite. The particle size was smaller than 100 nm.
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Authors ;STEFANIA STOLERIU;LUMINITA PATRON;IOANA MINDRU;DANA GINGASU
Journal meditsinskaia radiologiia
Year 2008
DOI
DOI not found
URL
http://www.shd.org.rs/JSCS/Vol73/No10/JSCS-3779.pdf
Keywords
X-ray diffraction chemical synthesis lithium ferrite

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