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Organization of Magnetic/Noble Metal Heterostructures by an Applied External Magnetic Field

Published online by Cambridge University Press:  01 February 2011

Nicolás Pazos-Pérez ,
Dmitry Baranov ,
Michael Hilgendorff ,
Jorge Pérez-Juste ,
Luis. M. Liz-Marzán  and
Michael Giersig
Nicolás Pazos-Pérez
Affiliation:
[email protected], center of advanced european studies and research (caesar), Nanoparticle Technology, Ludwig-erhard-Allee 2, Bonn, 53175, Germany
Dmitry Baranov
Affiliation:
[email protected], center of advanced european studies and research (caesar), Bonn, 53175, Germany
Michael Hilgendorff
Affiliation:
[email protected], center of advanced european studies and research (caesar), Bonn, 53175, Germany
Jorge Pérez-Juste
Affiliation:
[email protected], Department of Physical Chemistry, University of Vigo, Vigo, 36310, Spain
Luis. M. Liz-Marzán
Affiliation:
[email protected], Department of Physical Chemistry, University of Vigo, Vigo, 36310, Spain
Michael Giersig
Affiliation:
[email protected], center of advanced european studies and research (caesar), Bonn, 53175, Germany
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Abstract

This paper describes the synthesis of binary nanoparticles consisting of a noble metal and a magnetic component. These heterostructures were produced by a seeded-growth approach in aqueous solution. FePt nanoparticles, as the magnetic component, were first synthesized in an organic medium, subsequently transferred into water, and finally used as seeds for the growth of the noble metal Au. This procedure results in FePt-Au heterostructures. Moreover, the synthesized heterodimers were organized into mesoscopic lines under the influence of an externally applied magnetic field. The produced heterostructures were characterized by transmission electron microscopy (TEM), scanning electron microscopy (SEM), and UV-vis spectroscopy.

Keywords

Aumagneticcrystal growth
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1079: Symposium N – Materials and Processes for Advanced Interconnects for Microelectronics , 2008 , 1079-N10-05
Copyright
Copyright © Materials Research Society 2008

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References

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