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| Título: | Aerosol nanoparticles in the Fe1–xCrx system: Room-temperature stabilization of the phase and -phase transformation |
Autor: | Gich, Martí CSIC ORCID; Roig Serra, Anna CSIC ORCID; Casas Duocastella, Lluís; Molins, Elies CSIC ORCID | Palabras clave: | Iron alloys Chromium alloys Aerosols Nanoparticles Magnetic particles |
Fecha de publicación: | 19-jul-2005 | Editor: | American Institute of Physics | Citación: | Journal of Applied Physics 98(2): 024303 (2005) | Resumen: | The production and structural characterization of gas-evaporated nanoparticles in the Fe1–xCrx system, with 0<x<0.83 are reported. The results show that for x~0.5 the metastable -FeCr can be stabilized and it constitutes up 60 wt % of the material. The sample with the highest -FeCr content is further analyzed to study the structural and the magnetic properties of this phase and its thermal stability. The -FeCr phase is weakly magnetic with an average magnetic moment of 0.1µB per Fe atom and a Curie temperature below ~60 K. It is stable up to 550 K where it starts to transform to bcc-FeCr. Annealing at 700 K yields Cr2O3 due to Cr surface segregation and affects the magnetic behavior of the system, which is dominated by interparticle interactions. | Descripción: | 8 pages, 12 figures, 1 table.-- PACS: 75.50.Tt; 75.30.Kz; 82.70.Rr; 75.30.Cr; 68.35.Dv; 81.40.Gh.-- et al. | Versión del editor: | http://dx.doi.org/10.1063/1.1946907 | URI: | http://hdl.handle.net/10261/21693 | DOI: | 10.1063/1.1946907 | ISSN: | 0021-8979 |
| Aparece en las colecciones: | (ICMAB) Artículos |
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