Novel method to fabricate magnetic hollow silica particles with anisotropic structure

Magnetic Fe 3O 4/SiO 2 particles with rod-like structure and hollow interior have been constructed by a template method. During this procedure, β-FeOOH was firstly synthesized as the rod-like template to fabricate β-FeOOH/SiO 2 core/shell-like particles. These β-FeOOH/SiO 2 nanorods could be further...

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Bibliographic Details
Published in:Journal of magnetism and magnetic materials 2009-04, Vol.321 (8), p.1029-1033
Main Authors: Xuan, Shouhu, Liang, Fengxia, Shu, Kangying
Format: Article
Language:English
Subjects:
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Core/shell
Domain effects, magnetization curves, and hysteresis
Encapsulated
Exact sciences and technology
Hollow
Magnetic
Magnetic properties and materials
Magnetization curves, magnetization reversal, hysteresis, barkhausen and related effects
Physics
Rod-like
Small particles and nanoscale materials
Studies of specific magnetic materials
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Description
Summary:Magnetic Fe 3O 4/SiO 2 particles with rod-like structure and hollow interior have been constructed by a template method. During this procedure, β-FeOOH was firstly synthesized as the rod-like template to fabricate β-FeOOH/SiO 2 core/shell-like particles. These β-FeOOH/SiO 2 nanorods could be further transformed to Fe 3O 4/SiO 2 via the decomposition-reducing method. These particles showed ferromagnetic behavior at room temperature with high coercivity and may provide potential applications in biological area.
ISSN:0304-8853
DOI:10.1016/j.jmmm.2008.10.002