Synthesis of lithium ferrites from polymetallic carboxylates
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] (I...
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Serbian Chemical Society
2008-01-01
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doaj-1cda06ce358341c8be8c9270d2351c432020-12-30T07:55:30ZengSerbian Chemical Society Journal of the Serbian Chemical Society0352-51391820-74212008-01-01731097998810.2298/JSC0810979G0352-51390810979GSynthesis of lithium ferrites from polymetallic carboxylatesGingasu Dana0Mindru Ioana1Patron Luminita2Stoleriu Stefania3'Ilie Murgulescu' Institute of Physical Chemistry, Bucharest, Romania'Ilie Murgulescu' Institute of Physical Chemistry, Bucharest, Romania'Ilie Murgulescu' Institute of Physical Chemistry, Bucharest, Romania'Politehnica' University of Bucharest, Faculty of Chemistry, Department SIMO, Bucharest, RomaniaLithium 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 a-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.http://www.doiserbia.nb.rs/img/doi/0352-5139/2008/0352-51390810979G.pdflithium ferritechemical synthesisthermogravimetric analysis (tga)x-ray diffractionmagnetic properties |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Gingasu Dana Mindru Ioana Patron Luminita Stoleriu Stefania |
spellingShingle |
Gingasu Dana Mindru Ioana Patron Luminita Stoleriu Stefania Synthesis of lithium ferrites from polymetallic carboxylates Journal of the Serbian Chemical Society lithium ferrite chemical synthesis thermogravimetric analysis (tga) x-ray diffraction magnetic properties |
author_facet |
Gingasu Dana Mindru Ioana Patron Luminita Stoleriu Stefania |
author_sort |
Gingasu Dana |
title |
Synthesis of lithium ferrites from polymetallic carboxylates |
title_short |
Synthesis of lithium ferrites from polymetallic carboxylates |
title_full |
Synthesis of lithium ferrites from polymetallic carboxylates |
title_fullStr |
Synthesis of lithium ferrites from polymetallic carboxylates |
title_full_unstemmed |
Synthesis of lithium ferrites from polymetallic carboxylates |
title_sort |
synthesis of lithium ferrites from polymetallic carboxylates |
publisher |
Serbian Chemical Society |
series |
Journal of the Serbian Chemical Society |
issn |
0352-5139 1820-7421 |
publishDate |
2008-01-01 |
description |
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 a-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. |
topic |
lithium ferrite chemical synthesis thermogravimetric analysis (tga) x-ray diffraction magnetic properties |
url |
http://www.doiserbia.nb.rs/img/doi/0352-5139/2008/0352-51390810979G.pdf |
work_keys_str_mv |
AT gingasudana synthesisoflithiumferritesfrompolymetalliccarboxylates AT mindruioana synthesisoflithiumferritesfrompolymetalliccarboxylates AT patronluminita synthesisoflithiumferritesfrompolymetalliccarboxylates AT stoleriustefania synthesisoflithiumferritesfrompolymetalliccarboxylates |
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