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Synthesis and characterization of FePt/Au core-shell nanoparticles

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Presa Muñoz del Toro, Patricia de la and Multigner, M. and Morales, M. P. and Rueda, T. and Fernández Pinel, E. and Hernando Grande, Antonio (2007) Synthesis and characterization of FePt/Au core-shell nanoparticles. Journal of magnetism and magnetic materials, 316 (2). E753-E755. ISSN 0304-8853

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Official URL: http://dx.doi.org/10.1016/j.jmmm.2007.03.084


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Abstract

In this work, the structural and magnetic properties of the gold- coated FePt nanoparticles synthesized from high- temperature solution phase are presented. The amount of gold was optimized to obtain most of the FePt particles coated. The particle diameter increases from 4 to 10 nm as observed by TEM. The magnetic properties are largely affected by the coating. At low temperature, the coercive. field Hc of the coated nanoparticles decreases about three times respect to the uncoated and the blocking temperature reduces to the half. The changes of the magnetic behavior are discussed in terms of the effect of the gold atoms at the FePt core surface.


Item Type:Article
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© 2007 Elsevier B.V. All rights reserved.
Financial support from the Comunidad Autónoma de Madrid under Project No. S-0505/MAT/0194 is acknowledged.

Uncontrolled Keywords:Magnetic-properties; Fe
Subjects:Sciences > Physics > Materials
Sciences > Physics > Solid state physics
ID Code:45549
Deposited On:01 Dec 2017 16:22
Last Modified:01 Dec 2017 16:22

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