|
|||||
|
|
Synthesis and properties of sol-gel submicron silica powders doped with partly oxidized iron particles |
|
| Authors: | B. Borak S. Laskowski O. Heczko A. Aaltonen A. Baszczuk M. Jasiorski O. Söderberg B. Mazurek M. Oja S.-P. Hannula K. Maruszewski |
| Affiliation: | (1) Institute of Material Sciences and Applied Mechanics, Wrocław University of Technology, Smoluchowskiego 25, 50-370 Wrocław, Poland;(2) Electrotechnical Institute, Skłodowskiej-Curie 55/61, 50-369 Wrocław, Poland;(3) Laboratory of Materials Science, Helsinki University of Technology, P.O. Box 6200, FI-02015, TKK, Finland;(4) Institute for Low Temperature and Structure Research, Polish Academy of Sciences, Okólna 2, P.O. Box 1410, 50-950 Wrocław 2, Poland;(5) Institute of Inorganic Chemistry and Metallurgy of Rare Elements, Technical University of Wrocław, Smoluchowskiego 23, 50-372 Wrocław, Poland;(6) Laboratory of Mechanical Process Technology and Recycling, Helsinki University of Technology, P.O. Box 6200, FI-02015, TKK, Finland |
| Abstract: | Magnetic powders based on metallic iron crystallites encapsulated in submicron-sized spherical silica particles have been obtained and investigated. The metallic iron clusters have been produced by the exploding wire method. The silica shells have been prepared via the modified sol-gel Stöber method and the metallic particles have been entrapped by occlusion during the silica powder formation. The entrapped iron particles are partially oxidized due to the nature of the synthetic methods employed. The obtained hybrid materials have been investigated by electron microscopy, X-ray diffraction, magnetic and ζ-potential techniques. Such materials can be employed in such applications as e.g. magnetically-controlled drug vectors or electromagnetic field-shielding. |
| Keywords: | Iron particles Iron oxides Magnetic SiO2-Fe particles The sol-gel method |
| 本文献已被 SpringerLink 等数据库收录！ | |