Presa Muñoz De Toro, Patricia Marcela De LaMultigner, M.Morales, M. P.Rueda, T.Fernández Pinel, E.Hernando Grande, Antonio2023-06-202023-06-202007-090304-885310.1016/j.jmmm.2007.03.084https://hdl.handle.net/20.500.14352/52149© 2007 Elsevier B.V. All rights reserved. Financial support from the Comunidad Autónoma de Madrid under Project No. S-0505/MAT/0194 is acknowledged.In this work, the structural and magnetic properties of the gold- coated FePt nanoparticles synthesized from high- temperature solution phase are presented. The amount of gold was optimized to obtain most of the FePt particles coated. The particle diameter increases from 4 to 10 nm as observed by TEM. The magnetic properties are largely affected by the coating. At low temperature, the coercive. field Hc of the coated nanoparticles decreases about three times respect to the uncoated and the blocking temperature reduces to the half. The changes of the magnetic behavior are discussed in terms of the effect of the gold atoms at the FePt core surface.engAtribución-NoComercial-SinDerivadas 3.0 Españahttps://creativecommons.org/licenses/by-nc-nd/3.0/es/journal articlehttp://dx.doi.org/10.1016/j.jmmm.2007.03.084http://www.sciencedirect.comopen access538.9Magnetic-propertiesFeFísica de materialesFísica del estado sólido2211 Física del Estado Sólido