Laser pyrolysis preparation of SiO2-coated magnetic nanoparticles for biomedical applications

被引:18
作者
Bomatí-Miguel, O
Leconte, Y
Morales, MP
Herlin-Boime, N
Veintemillas-Verdaguer, S
机构
[1] Inst Ciencia Mat Madrid, Madrid 28049, Spain
[2] CEA Saclay, CNRS, CEA, URA 2453,SPAM, F-91191 Gif Sur Yvette, France
关键词
composites materials; laser; magnetisation curves; nanoparticles; surface; exchange enhancement;
D O I
10.1016/j.jmmm.2004.11.207
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
The encapsulation of magnetic particles into silica has been achieved efficiently in a single and continuous process by laser-induced pyrolysis of ferrocene and TEOS aerosols. This process results in rather homogeneous iron/magnetite particles smaller than 10 nm in diameter surrounded by a SiO2 coating of about 20 nm. Interactions between the metal core and the passivation layer dominates the coercivity at low temperature in these systems. (c) 2004 Elsevier B.V. All rights reserved.
引用
收藏
页码:272 / 275
页数:4
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