Browsing by Author "Hannula, Simo Pekka, Prof."
Now showing items 1-4 of 4
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Influence of different synthesis approach on doping behavior of silver nanoparticles onto the iron oxide-silica coreshell surfaces
Norsuria, Mahmed; Hua, Jiang; Heczko, Oleg; Maki, Ryuji; Söderberg, Outi O.; Haimi, Eero; Hannula, Simo Pekka, Prof. (Springer Science+Business Media B.V., 2012-07)Silver (Ag) nanoparticles with the crystallite size ranging from 13-24 nm were successfully doped onto the surface of iron oxide-silica coreshell particles. In the process, iron oxide particles having a size distribution ... -
The magnetic and oxidation behavior of bare and silica-coated iron oxide nanoparticles synthesized by reverse co-precipitation of ferrous ion (Fe²⁺) in ambient atmosphere
Norsuria, Mahmed; Heczko, Oleg; Lancok, A.; Hannula, Simo Pekka, Prof. (Elsevier/NORTH-HOLLAND, 2014-03)The synthesis of iron oxide nanoparticles, i.e., magnetite was attempted by using only ferrous ion (Fe²⁺) as a magnetite precursor, under an ambient atmosphere. The room temperature reverse co-precipitation method was used, ... -
Novel iron oxide–silica coreshell powders compacted by using pulsed electric currentsintering: Optical and magnetic properties
Norsuria, Mahmed; Heczko, Oleg; Maki, Ryuji; Söderberg, Outi O.; Haimi, Eero; Hannula, Simo Pekka, Prof. (Elsevier Ltd, 2012-08)The properties of the bulk materials consolidated of silica coreshell powders with iron oxide core have been studied. Iron oxide nanoparticles smallerthan 20nmin sizewere synthesized by a reverse co-precipitation processin ... -
Phase transformation of iron oxide–silica coreshell structure during differential scanning calorimetry and pulsed electric current sintering processes: A comparison
Norsuria, Mahmed; Friman, Michael; Hannula, Simo Pekka, Prof. (Elsevier B.V., 2012-10)This paper discusses the phase transformation of iron oxide nanoparticles inside the silica spheres during high temperature differential scanning calorimetry (DSC) in argon and pulsed electric current sintering (PECS) ...