Preparation of functionalized Fe1-xPdx based nanoparticles: magnetic characterization

I. Gil de Muro; I. Castellanos; L. Lezama; M. Insausti; E. Garayo; F. Plazaola; T. Rojo

doi:10.1117/12.906655

2 February 2012 Preparation of functionalized Fe_1-xPd_x based nanoparticles: magnetic characterization

I. Gil de Muro, I. Castellanos, L. Lezama, M. Insausti, E. Garayo, F. Plazaola, T. Rojo

Proceedings Volume 8232, Colloidal Nanocrystals for Biomedical Applications VII; 82321L (2012) https://doi.org/10.1117/12.906655
Event: SPIE BiOS, 2012, San Francisco, California, United States

Abstract

Oleic acid/oleylamine capped Fe_1-xPd_x (x=0.16, 0.20, 0.25) nanoparticles have been synthesized using a diol as reducing agent in order to get nanoparticles of different average sizes and coatings. Composition and morphology were analyzed by infrared spectroscopy (IR), X-Ray Diffraction (RXD), thermogravimetry (TG) and Transmission Electron Microscopy (TEM). Well dispersed nanoparticles with uniform sizes between 3 and 8 nm and average diameters less than 6 nm were obtained. Magnetic properties were investigated by Electron Magnetic Resonance (EMR) and magnetization measurements. Most of the nanoparticles were superparamagnetic at physiological temperature with low magnetic saturation values (near 5 emu.g^-1 alloy/0.4 Nβ per Fe atom). SAR measurements were also performed with the aim of carrying out hyperthermia measurements but the nanoparticles did not work as magnetic heaters.

Citation Download Citation

I. Gil de Muro, I. Castellanos, L. Lezama, M. Insausti, E. Garayo, F. Plazaola, and T. Rojo "Preparation of functionalized Fe_1-xPd_x based nanoparticles: magnetic characterization", Proc. SPIE 8232, Colloidal Nanocrystals for Biomedical Applications VII, 82321L (2 February 2012); https://doi.org/10.1117/12.906655

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