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Publikācija: Study of the Structural Phase Transformation of Iron Oxide Nanoparticles from an Fe2+ Ion Source by Precipitation under Various Synthesis Parameters and Temperatures

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Nosaukums oriģinālvalodā Study of the Structural Phase Transformation of Iron Oxide Nanoparticles from an Fe2+ Ion Source by Precipitation under Various Synthesis Parameters and Temperatures
Pētniecības nozare 2. Inženierzinātnes un tehnoloģijas
Pētniecības apakšnozare 2.5. Materiālzinātne
Autori Andris Šutka
Santa Lagzdiņa
Tanel Käämbre
Rainer Pärna
Vambola Kisand
Jānis Kleperis
Mikhail Maiorov
Arvo Kikas
Ivar Kuusik
Dmitrijs Jakovļevs
Atslēgas vārdi Magnetic properties; Nanostructures; Oxides; Precipitation
Anotācija Magnetite nanoparticles were precipitated from a pure aqueous ferrous salt solution in an air atmosphere. The influence of the solution molarity, the rate of precipitator agent addition, stirring time and annealing temperature was studied. The morphology, crystalline phase purity and magnetic properties of the obtained powders were studied by X-Ray powder diffraction (XRD), Scanning electron microscopy (SEM), Differential thermal analysis (DTA), X-ray photoelectron spectroscopy (XPS), X-ray absorption spectroscopy (XAS) and Vibrating sample magnetometer (VSM). The synthesis conditions were seen to have an effect on phase composition. It was possible to obtain near stoichiometric Fe3O4 or a mixture of Fe3O4, γ-Fe2O3, α-Fe2O3 and FeOOH. Fe3O4 nanoparticles showed high saturation magnetization ~86 emu/g.
DOI: 10.1016/j.matchemphys.2014.10.048
Hipersaite: http://www.sciencedirect.com/science/article/pii/S0254058414006993 
Atsauce Šutka, A., Lagzdiņa, S., Käämbre, T., Pärna, R., Kisand, V., Kleperis, J., Maiorov, M., Kikas, A., Kuusik, I., Jakovļevs, D. Study of the Structural Phase Transformation of Iron Oxide Nanoparticles from an Fe2+ Ion Source by Precipitation under Various Synthesis Parameters and Temperatures. Materials Chemistry and Physics, 2015, Vol.149-150, 473.-479.lpp. ISSN 0254-0584. Pieejams: doi:10.1016/j.matchemphys.2014.10.048
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