Low-temperature solution synthesis of chemically functional ferromagnetic FePtAu nanoparticles

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Kinge, Sachin and Gang, Tian and Naber, Wouter J.M. and Boschker, Hans and Rijnders, Guus and Reinhoudt, David N. and Wiel, Wilfred G. van der (2009) Low-temperature solution synthesis of chemically functional ferromagnetic FePtAu nanoparticles. Nano Letters, 9 (9). pp. 3220-3224. ISSN 1530-6984

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Abstract:Magnetic nanoparticles are of great scientific and technological interest. The application of ferromagnetic nanoparticles for high-density data storage has great potential, but energy efficient synthesis of uniform, isolated, and patternable nanoparticles that remain ferromagnetic at room temperature is not trivial. Here, we present a low-temperature solution synthesis method for FePtAu nanoparticles that addresses all those issues and therefore can be regarded as an important step toward applications. We show that the onset of the chemically ordered face-centered tetragonal (L10) phase is obtained for thermal annealing temperatures as low as 150 C. Large uniaxial magnetic anisotropy (107 erg/cm3) and a high long-range order parameter have been obtained. Our low-temperature solution annealing leaves the organic ligands intact, so that the possibility for postanneal monolayer formation and chemically assisted patterning on a surface is maintained.
Item Type:Article
Copyright:© 2009 American Chemical Society
Faculty:
Electrical Engineering, Mathematics and Computer Science (EEMCS)
Science and Technology (TNW)
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Link to this item:http://purl.utwente.nl/publications/69065
Official URL:http://dx.doi.org/10.1021/nl901465s
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