• Paseo, Sebastián
• San, Parque Tecnológico De
• Gonzalez, Julian M.
• Luzuriaga, A. Ruiz De
• Carrrasco, P. M.
• Echeberria, J.
• Grande, H.
• Garcia, I.
• Pomposo, José A.
• Lardizabal, Paseo Manuel De

Abstract

Nanoscale materials and magnetic nanoparticles particularly, have attracted significant scientific and industrial interest due to unique properties compared with bulk materials. Due to large coercivity, remanence, and time stability at room temperature, magnetic nanoparticles have been considered especially attractive for applications in magnetic recording density, recording speed, noise suppression and sensors. Thermal decomposition, sonochemical method, laser pyrolysis and reduction of salts with borohydride derivates are some synthetic techniques use to synthesize magnetic metal nanoparticles. Last years, these nanoparticles embedded in a polymeric matrix were used to obtain new material with potential applications as microwave absorbing and shielding also and in electromagnetic devices. In order to obtain this kind of devices and improve dispersion of nanoparticles inside organic matrix a new type of nanoparticles has been synthesized. In the present work, synthesis of FeNi alloy nanoparticles by reducing iron and nickel salts with borohydride derivates and their surface modification are shown.

Topics

• nanoparticle
• density
• dispersion
• surface
• nickel
• iron
• laser pyrolysis
• coercivity