| Title | Structural and magnetic properties of Fe-Al silica composites prepared by sequential ion implantation |
|---|---|
| Publication Type | Articolo su Rivista peer-reviewed |
| Year of Publication | 2004 |
| Authors | C. Fernández, de Julián, Tagliente M.A., Mattei G., Sada C., Bello V., Maurizio C., Battaglin G., Sangregorio C., Gatteschi D., Tapfer Leander, and Mazzoldi P. |
| Journal | Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms |
| Volume | 216 |
| Pagination | 245-250 |
| ISSN | 0168583X |
| Keywords | Aluminum alloys, Crystal lattices, Fe-Al alloys, Ferromagnetism, Granular materials, Ion implantation, Iron alloys, Magnetic nanoparticles, Magnetization, Magnetometers, Rutherford backscattering spectroscopy, Silica, Silica composites, SQUIDs, Superparamagnetism, Transmission electron microscopy, X ray diffraction analysis |
| Abstract | The nanostructural and magnetic properties of Fe-Al/SiO2 granular solids prepared by ion implantation have been investigated. A strong effect of the implantation order of the Fe and Al ions has been evidenced. By implanting first the Al ions and later Fe ions, 5-40 nm core-shell nanoparticles are formed with a magnetic behavior similar to that of Fe. The lattice parameter of the nanoparticles is consistent with that of the α-Fe. By changing the implantation order, 10-15 nm core-shell nanoparticles of a bcc Fe-based phase with a lattice 2.5% smaller than that of α-Fe are formed. The temperature dependence of the magnetization indicates a superparamagnetic behavior. © 2003 Elsevier B.V. All rights reserved. |
| Notes | cited By 22; Conference of Proceedings of the E-MRS 2003 Symposium E on Ion Beams ; Conference Date: 10 June 2003 Through 13 June 2003; Conference Code:62257 |
| URL | https://www.scopus.com/inward/record.uri?eid=2-s2.0-1042286914&doi=10.1016%2fj.nimb.2003.11.041&partnerID=40&md5=c7b08ce8b7ba457240d6d6a353633c89 |
| DOI | 10.1016/j.nimb.2003.11.041 |
| Citation Key | DeJuliánFernández2004245 |
