Manganite perovskite nanoparticles for self-controlled magnetic fluidhyperthermia: about the suitability of an aqueous combustion synthesis route

0367156 - FZÚ 2012 RIV GB eng J - Journal Article
Epherre, R. - Duguet, E. - Mornet, S. - Pollert, Emil - Louguet, S. - Lecommandoux, S. - Schatz, Ch. - Goglio, G.
Manganite perovskite nanoparticles for self-controlled magnetic fluidhyperthermia: about the suitability of an aqueous combustion synthesis route.
Journal of Materials Chemistry. Roč. 21, č. 12 (2011), s. 4393-4401. ISSN 0959-9428
Institutional research plan: CEZ:AV0Z10100521
Keywords : manganese perovskite nanoparticles * aqueouc combustion synthesis
Subject RIV: BM - Solid Matter Physics ; Magnetism
Impact factor: 5.968, year: 2011

Unaggregated La0.82Sr0.18MnO3 + δ perovskite nanoparticles with a mean crystallite size of 22 nm were successfully synthesized through an aqueous combustion process (Glycine Nitrate Process, GNP)which takes advantage of exothermic, fast and self-sustaining chemical reactions between metal nitrates and glycine as a suitable organic reducing agent. The influence of G/N molar ratio on the phase purity,crystallite size and manganese valency was screened. Fuel-rich conditions were selected to improve chelation of the cations in acidic pH and ensure an accurate control of the cationic composition. Fast calcination was optimized to enhance crystallinity of the nanoparticles and subsequent milling step was performed to favour their desaggregation. The manganite nanoparticles were thoroughly characterized by X-ray diffraction (XRD), elemental chemical analysis, Mohr salt titration and transmission electron microscopy(TEM.
Permanent Link: http://hdl.handle.net/11104/0006667