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Mössbauer and Thermal Studies of Sodium Ferrite Synthesized from Sodium / Potassium Hexakis (Trimethylacetato) Ferrate (III) Complexes

Journal: International Journal of Chemical and Physical Sciences(IJCPS) (Vol.2, No. 6)

Publication Date:

Authors : ;

Page : 1-5

Keywords : Mössbauer Spectroscopy; ferrites; Carboxylates; Thermolysis; Nanoferrites;

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Abstract

The thermal analysis of sodium and potassium hexakis (trimethylacetato) ferrate (III) complexes has been carried out in flowing air atmosphere from ambient temperature to 500 o C. Various physicochemical techniques i.e. TGA-DTG, IR and M ssbauer spectroscopy etc have been carried out to characterize the intermediate and end products. After dehydrations, the anhydrous complexes undergo decomposition to yield -Fe2O3 and metal oxalate in the temperature range 200-500o C. A subsequent oxidative decomposition of metal oxalates leads to the formation of respective alkali metal carbonate/oxides in successive stages. Finally, nanosized ferrites have been obtained as result of solid state reaction between -Fe2O3 and fraction of MCO/ MCO3. The temperature of ferrite formation is much lower than possible in the conventional ceramic method.

Last modified: 2013-12-23 15:41:12