Nano Archive

Investigation of a Mesoporous Silicon Based Ferromagnetic Nanocomposite

Granitzer, P. and Rumpf, K. and Roca, A. G. and Morales, M. P. and Poelt, P. and Albu, M. (2009) Investigation of a Mesoporous Silicon Based Ferromagnetic Nanocomposite. Nanoscale Research Letters, 5 (2). pp. 374-378.

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Abstract

A semiconductor/metal nanocomposite is composed of a porosified silicon wafer and embedded ferromagnetic nanostructures. The obtained hybrid system possesses the electronic properties of silicon together with the magnetic properties of the incorporated ferromagnetic metal. On the one hand, a transition metal is electrochemically deposited from a metal salt solution into the nanostructured silicon skeleton, on the other hand magnetic particles of a few nanometres in size, fabricated in solution, are incorporated by immersion. The electrochemically deposited nanostructures can be tuned in size, shape and their spatial distribution by the process parameters, and thus specimens with desired ferromagnetic properties can be fabricated. Using magnetite nanoparticles for infiltration into porous silicon is of interest not only because of the magnetic properties of the composite material due to the possible modification of the ferromagnetic/superparamagnetic transition but also because of the biocompatibility of the system caused by the low toxicity of both materials. Thus, it is a promising candidate for biomedical applications as drug delivery or biomedical targeting.

Item Type:Article
Uncontrolled Keywords:Porous silicon - Nanocomposite - Magnetic nanoparticles
Subjects:Physical Science > Nanophysics
Physical Science > Nanoelectronics
Physical Science > Nanomagnetics
ID Code:8153
Deposited By:Lesley Tobin
Deposited On:22 Mar 2010 14:12
Last Modified:22 Mar 2010 14:12

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