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Synthesis of magnetic CoPt/SiO2 nano-composite by pulsed laser ablation

Paper ID Volume ID Publish Year Pages File Format Full-Text
29046 44113 2006 4 PDF Available
Title
Synthesis of magnetic CoPt/SiO2 nano-composite by pulsed laser ablation
Abstract

Core–shell nanoparticles composed of ferromagnetic cobalt platinum cores covered by non-magnetic silica shells were synthesized by laser ablation of a composite target in a helium background gas. The average diameter of the CoPt core was controlled by adjusting the CoPt/SiO2 ratio of the ablation target and size-classifying the nanoparticles by an electrical mobility classifier. The present method successfully synthesized nearly monodispersed nanoparticles with an average core diameter as small as 2 nm. The size-dependent magnetic properties of nano-composite films generated by the deposition of nanoparticles onto the substrate were investigated by a SQUID magnetometer.

Keywords
Core–shell nanoparticle; Superparamagnetism; Cobalt platinum; Laser ablation
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Synthesis of magnetic CoPt/SiO2 nano-composite by pulsed laser ablation
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Publisher
Database: Elsevier - ScienceDirect
Journal: Journal of Photochemistry and Photobiology A: Chemistry - Volume 182, Issue 3, 10 September 2006, Pages 342–345
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us