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dc.contributor.author | Clavero Pérez, César | - |
dc.contributor.author | Skuza, J. R. | - |
dc.contributor.author | García-Martín, José Miguel | - |
dc.contributor.author | Cebollada, Alfonso | - |
dc.contributor.author | Walko, D. A. | - |
dc.contributor.author | Lukaszew, R. A. | - |
dc.date.accessioned | 2009-07-28T11:34:50Z | - |
dc.date.available | 2009-07-28T11:34:50Z | - |
dc.date.issued | 2009-03-31 | - |
dc.identifier.citation | Physical Review B, 79 (2009) | en_US |
dc.identifier.issn | 1098-0121 | - |
dc.identifier.uri | http://hdl.handle.net/10261/15440 | - |
dc.description.abstract | We report on the time evolution of mass transport upon annealing nonequilibrium Fe-Pt nanocomposite films, leading to nucleation of L10 chemically ordered phase. The nonequilibrium nanocomposite films were fabricated by applying Fe+ ion implantation to epitaxial Pt films grown on (001) MgO substrates, yielding Fe nanoclusters embedded in a Pt matrix at a tailored penetration depth. Time-resolved x-ray diffraction studies were carried out using synchrotron radiation, allowing determination of the activation energy for nucleation of the FePt L10 phase within the segregated nanoclusters during annealing. The growth of the segregated L10 ordered phase was modeled using ideal grain-size law and found to be dominated by strain-driven surface nucleation. The activation energies were found to correlate with the nanocluster size. Magnetic characterization of selected annealed samples indicates perpendicular magnetic anisotropy with high coercive field coincident with high value of the chemical order parameter of the ordered phase within the magnetic nanoclusters. | en_US |
dc.description.sponsorship | Funding from NSF (Grant No. DMR-0355171), Research Corporation Cottrell Scholar Award, and the American Chemical Society under Grant No. PRF-41319-AC10 is acknowledged. Funding from different Spanish Institutions, CM (Grant No. S-0505/MAT/0194) (NANOMAGNET) and MEC (Grant No. MAT2005-05524-C02-01), is also acknowledged. Use of the Advanced Photon Source was supported by the Office of Science, Office of Basic Energy Sciences, U.S. Department of Energy under Contract No. DEAC02-06CH11357. The authors also acknowledge R. Irving, M. Brown, and M. Mitra for assistance during ion implantation at the Toledo Heavy Ion Accelerator (THIA). | en_US |
dc.format.extent | 351791 bytes | - |
dc.format.mimetype | application/pdf | - |
dc.language.iso | eng | en_US |
dc.publisher | American Physical Society | en_US |
dc.rights | openAccess | en_US |
dc.subject | Annealing | en_US |
dc.subject | Coercive force | en_US |
dc.subject | Ferromagnetic materials | en_US |
dc.subject | Grain size | en_US |
dc.subject | Iron | en_US |
dc.subject | Magnetic thin films | en_US |
dc.subject | Nanocomposites | en_US |
dc.subject | Nucleation | en_US |
dc.subject | Perpendicular magnetic anisotropy | en_US |
dc.subject | Platinum | en_US |
dc.subject | X-ray diffraction | en_US |
dc.subject | Segregation | en_US |
dc.title | Order and phase nucleation in nonequilibrium nanocomposite Fe-Pt thin films with perpendicular magnetic anisotropy | en_US |
dc.type | artículo | en_US |
dc.identifier.doi | 10.1103/PhysRevB.79.104436 | - |
dc.description.peerreviewed | Peer reviewed | en_US |
dc.relation.publisherversion | http://link.aps.org | en_US |
dc.relation.publisherversion | http://dx.doi.org/10.1103/PhysRevB.79.104436 | en_US |
dc.type.coar | http://purl.org/coar/resource_type/c_6501 | es_ES |
item.openairetype | artículo | - |
item.grantfulltext | open | - |
item.cerifentitytype | Publications | - |
item.openairecristype | http://purl.org/coar/resource_type/c_18cf | - |
item.fulltext | With Fulltext | - |
item.languageiso639-1 | en | - |
Aparece en las colecciones: | (IMN-CNM) Artículos |
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Clavero, C. et al Physic. Rev. B_79_2009.pdf | 343,55 kB | Adobe PDF | Visualizar/Abrir |
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