Magnetic powders based on metallic nickel nanoparticles encapsulated in submicron-sized spherical silica shells have been obtained and investigated. The nickel clusters were produced by the exploding wire method. The silica shells were prepared via the modified sol-gel Stöber method, and the metallic particles were entrapped by their occlusion during silica powder formation. The obtained hybrid materials were investigated by electron microscopy, X-ray diffraction, magnetic, and ζ potential techniques. The obtained materials can potentially be employed in such applications as magnetically controlled drug vectors or electromagnetic field shielding.
|Number of pages||9|
|Journal||MATERIALS SCIENCE POLAND|
|Publication status||Published - 2007|
|MoE publication type||A1 Journal article-refereed|
- Magnetic SiO-Ni particles
- Nickel particles
- Sol-gel method