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A simple chemical route toward monodisperse iron carbide nanoparticles displaying tunable magnetic and unprecedented
Anca Meffre1, Boubker Mehdaoui, Vinciane Kelsen
1Laboratoire de Physique et Chimie des Nano Objets, INSA, Université de Toulouse, 135, Avenue de Rangueil, F-31077 Toulouse, France.
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.
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