Synthesis and Fabrication of a Thin Film Containing Silica-Encapsulated Face-Centered Tetragonal FePt Nanoparticles

Synthesis and Fabrication of a Thin Film Containing Silica-Encapsulated Face-Centered Tetragonal FePt Nanoparticles

Self‐assembly of monodisperse, silica‐encapsulated, face‐centered tetragonal FePt nanoparticles forms closely packed 2D arrays (see figure). Placing monodisperse FePt nanoparticles in silica nanocapsules allows the transition from a disordered face‐centered cubic phase to a ferromagnetic crystalline...

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Bibliographic Details
Published in:Advanced materials (Weinheim) Vol. 18; no. 17; pp. 2312 - 2314
Main Authors: Yu, C. H., Caiulo, N., Lo, C. C. H., Tam, K., Tsang, S. C.
Format: Journal Article
Language:English
Published: Weinheim WILEY-VCH Verlag 05-09-2006
WILEY‐VCH Verlag
Subjects:
Core/shell nanoparticles
Ferromagnetic materials
Langmuir-Blodgett techniques
magnetic
Magnetic materials
Nanoparticle arrays
Nanoparticles
Nanoparticles, magnetic
Silica
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Summary:Self‐assembly of monodisperse, silica‐encapsulated, face‐centered tetragonal FePt nanoparticles forms closely packed 2D arrays (see figure). Placing monodisperse FePt nanoparticles in silica nanocapsules allows the transition from a disordered face‐centered cubic phase to a ferromagnetic crystalline face‐centered tetragonal structure at elevated temperature without severe sintering. These materials are potential candidates for the generation of ultrahigh‐density magnetic recording media.
Bibliography:EPSRC
ArticleID:ADMA200600802
This work is funded by EPSRC and AstraZeneca in the UK. CHY thanks the co-sponsorship for a PhD from University of Reading and AstraZeneca. The support of this work with SuperSTEM microscopic facilities at National Daresbury laboratory, UK, is also acknowledged. Supporting Information is available online from Wiley InterScience or from the author.
AstraZeneca
ark:/67375/WNG-XVVWWGJ8-F
istex:5B51DEA1833A781B6CAB05612CA46890562417B5
This work is funded by EPSRC and AstraZeneca in the UK. CHY thanks the co‐sponsorship for a PhD from University of Reading and AstraZeneca. The support of this work with SuperSTEM microscopic facilities at National Daresbury laboratory, UK, is also acknowledged. Supporting Information is available online from Wiley InterScience or from the author.
ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
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ISSN:0935-9648
1521-4095
DOI:10.1002/adma.200600802