A simple chemical route toward monodisperse iron carbide nanoparticles displaying tunable magnetic and unprecedented hyperthermia properties.

Abstract

We report a tunable organometallic synthesis of monodisperse iron carbide and core/shell iron/iron carbide nanoparticles displaying a high magnetization and good air-stability. This process based on the decomposition of Fe(CO)(5) on Fe(0) seeds allows the control of the amount of carbon diffused and therefore the tuning of nanoparticles magnetic anisotropy. This results in unprecedented hyperthermia properties at moderate magnetic fields, in the range of medical treatments.

• Authors: Anca Meffre, Boubker Mehdaoui, Vinciane Kelsen, Pier Francesco Fazzini, Julian Carrey, Sebastien Lachaize, Marc Respaud, Bruno Chaudret
• Journal: Nano letters (Nano Lett) Vol. 12 Issue 9 Pg. 4722-8 (Sep 12 2012) ISSN: 1530-6992 [Electronic] United States
• PMID: 22845848 (Publication Type: Journal Article, Research Support, Non-U.S. Gov't)

Chemical References

• Carbon Compounds, Inorganic
• Iron Compounds
• iron carbide

Topics

• Carbon Compounds, Inorganic (chemistry, radiation effects)
• Electric Impedance
• Hyperthermia, Induced (methods)
• Iron Compounds (chemistry, radiation effects)
• Magnetic Fields
• Materials Testing
• Metal Nanoparticles (chemistry, radiation effects)
• Particle Size