The nanostructural and magnetic properties of Fe-Pd/SiO2granular solids prepared by sequential ion implantation have been investigated. Nanostructural features depend on the relative Pd/Fe implanted dose and, in particular, in the Pd50Fe50sample 2-6 nm size nanoparticles with the disordered FCC structure are formed. At low temperatures Fe-Pd composites have open hysteresis loops with coercivity fields of some mT and large magnetic moment per Fe atom (2.8 μB). In only-Fe and Fe-Pd composites the nanoparticles are superparamagnetic at room temperature and the blocking temperature increases from 20 K, for the only-Fe sample, to 110 K, for Fe50Pd50sample. © 2004 Elsevier B.V. All rights reserved.
All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Ceramics and Composites
- Condensed Matter Physics
- Materials Chemistry
De Julián Fernández, C., Mattei, G., Sangregorio, C., Tagliente, M. A., Bello, V., Battaglin, G., ... Mazzoldi, P. (2004). Structure and magnetic properties of Fe-Pd silica composites prepared by sequential ion implantation. Journal of Non-Crystalline Solids, 345-346, 681 - 684. https://doi.org/10.1016/j.jnoncrysol.2004.08.158