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http://nopr.niscpr.res.in/handle/123456789/20959| Title: | Synthesis of Mg0.3Zn0.7Fe2O4 nanoparticles from thermolysis of magnesium zinc tris(maleato)ferrate(III) heptahydrate |
| Authors: | Kaura, Manpreet Randhawa, B S Tarsikka, P S |
| Keywords: | Ferrite;TG-DTG-DSC;Superparamagnetism;Nanoparticles;Thermolysis |
| Issue Date: | Aug-2013 |
| Publisher: | NISCAIR-CSIR, India |
| Abstract: | Mg0.3Zn0.7Fe2O4 nanoparticles are synthesized from the thermolysis of precursor magnesium zinc tris(maleato)ferrate heptahydrate MgZn2[Fe(C4H2O4)3]27H2O. Thermal decomposition, structural and morphological characterization is studied with simultaneous thermal analysis (STA- viz. TG-DTG-DSC), X-ray diffraction (XRD), scanning electron microscopy (SEM) and Mössbauer spectroscopy. Dehydration of the precursor completed in two steps followed by decomposition reactions to yield unstable zinc and magnesium oxalates; and metastable ferrous oxalate as intermediates, which further decomposed exothermally into MgO, ZnO and α-Fe2O3. Solid state reaction between oxide phases formed spinel ferrite Mg0.3Zn0.7Fe2O4 as final product at 460°C. Presence of superparamagnetism at room temperature in the final thermolysis product is confirmed by Mössbauer spectrum. Ferrite powder is observed with SEM to be mono dispersed and nano sized with average diameter of 45 nm. |
| Page(s): | 325-328 |
| ISSN: | 0975-1017 (Online); 0971-4588 (Print) |
| Appears in Collections: | IJEMS Vol.20(4) [August 2013] |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| IJEMS 20(4) 325-328.pdf | 139.64 kB | Adobe PDF | View/Open |
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