UM  > 健康科學學院
Tailoring FePt-Fe3O4 exchange spring coupling magnet in silica
Yu C.H.2; Lo C.C.H.3; Tam K.1; Tsang S.C.2
Source Publication2006 NSTI Nanotechnology Conference and Trade Show - NSTI Nanotech 2006 Technical Proceedings
AbstractThe synthesis of magnetic nanoparticles has been intensively investigated not only for their electrical, optical and magnetic properties but also for their various new technological applications, such as in the areas of biology and medicine. Exchange-spring magnets are nanocomposites that are composed of magnetically hard and soft phases that interact by magnetic exchange coupling. Such systems give a major advantage of combining the permanent magnetic field with magnetization hence rendering the mixture with many unique magnetic properties compared to traditional single-phase nano-magnets. However, one major current problem encountered is to generate the stable homogeneous mixed phase nano-composites with a narrow particle distribution. Thus, the new nanocomposites can give an optimum exchange coupling for applications. Here, we report the synthesis of exchange spring coupling of FePt/FePt nanocomposites by modified polyol process. The nanocomposite is deliberately placed in silica such that the treatment could offer advantages of further stabilizing and isolating the nano-magnets from interferences by their embedment in silica during annealing. As a result, tailoring of the silica encapsulated FePt-FeO in its L1 phase can be, for the first time, demonstrated.
KeywordEnergy storage Exchange coupling Magnetic nanoparticles Silica encapsulated iron-platinum
URLView the original
Fulltext Access
Document TypeConference paper
CollectionFaculty of Health Sciences
2.University of Reading
3.Iowa State University
Recommended Citation
GB/T 7714
Yu C.H.,Lo C.C.H.,Tam K.,et al. Tailoring FePt-Fe3O4 exchange spring coupling magnet in silica[C],2006:415-418.
Related Services
Recommend this item
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Yu C.H.]'s Articles
[Lo C.C.H.]'s Articles
[Tam K.]'s Articles
Baidu academic
Similar articles in Baidu academic
[Yu C.H.]'s Articles
[Lo C.C.H.]'s Articles
[Tam K.]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Yu C.H.]'s Articles
[Lo C.C.H.]'s Articles
[Tam K.]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.