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Issue 7, 2007
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Magnetic properties of dendrimer-encapsulated iron nanoparticles containing an average of 55 and 147 atoms

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Abstract

The synthesis, characterization and magnetic properties of Fe nanoparticles containing an average of 55 and 147 atoms are described. The nanoparticles are prepared using dendrimer templates, and therefore they are nearly size-monodisperse. In the absence of oxygen and water, the Fe nanoparticles are stable, but they decompose quickly when exposed to air. Magnetic analysis indicates that the 55-atom nanoparticles are superparamagnetic, but the 147-atom materials undergo a transition to ferromagnetic at 6 K. Both materials exhibit suppression of the magnetic saturation compared to bulk Fe.

Graphical abstract: Magnetic properties of dendrimer-encapsulated iron nanoparticles containing an average of 55 and 147 atoms

  • This article is part of the themed collection: Dendrimers
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Publication details

The article was received on 09 Nov 2006, accepted on 11 Apr 2007 and first published on 18 May 2007


Article type: Paper
DOI: 10.1039/B616471B
Citation: New J. Chem., 2007,31, 1349-1353
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    Magnetic properties of dendrimer-encapsulated iron nanoparticles containing an average of 55 and 147 atoms

    M. R. Knecht and R. M. Crooks, New J. Chem., 2007, 31, 1349
    DOI: 10.1039/B616471B

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