Study of colloidal particles FemOn-SiO2 synthesized by two different techniques

2nd International School and Conference Saint-Petersburg OPEN on Optoelectronics, Photonics, Engineering and Nanostructures

Gareev, K.G.^1 ; Ionin, S.A.^1 ; Korolev, D.V.^2 ; Luchinin, V.V.^1 ; Moshnikov, V.A.^1,3 ; Panov, M.F.^1 ; Permyakov, N.V.^1

Saint Petersburg Electrotechnical University LETI, 5th Prof. Popova Str., Saint-Petersburg

197376, Russia^1

Institute of Experimental Medicine, Federal North-West Medical Research Centre, 15 th Parkhomenko Str., Saint-Petersburg

194156, Russia^2

Saint Petersburg Polytechnic University, 29th Politechnicheskaya Str., Saint-Petersburg

195251, Russia^3

关键词: Colloidal particle;    Colloidal solutions;    FTIR spectroscopy;    Influence of magnetic field;    Iron oxide particles;    LCR meters;    Silica cores;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/643/1/012088/pdf
DOI  :  10.1088/1742-6596/643/1/012088

来源: IOP

【 摘 要 】

Colloidal solutions FemOn-SiO2were obtained by two different techniques based on sol-gel process: silica cores partially coated by iron oxide particles and iron oxide cores coated by silica. Dried layers were investigated by atomic force microscopy and size distribution was plotted. Chemical contain of dried specimen was analysed by FTIR-spectroscopy. Magnetic properties of colloidal particles obtained by both the techniques were measured by VSM. Resistivity's change under the influence of magnetic field was measured using LCR-meter.