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| Título: | Thermomagnetic behaviour and compositional irreversibility on (Fe/Si) 3 multilayer films |
Autor: | Badía-Romano, L. CSIC; Rubín, Javier CSIC ORCID; Magén, César ; Bartolomé, Fernando CSIC ORCID; Sesé Monclús, Javier CSIC ORCID; Ibarra, M. Ricardo CSIC ORCID; Bartolomé, Juan CSIC ORCID; Hierro-Rodríguez, Aurelio CSIC ORCID; Martín, José Ignacio CSIC ORCID; Alameda, J. M. CSIC; Varnakov, S. N. | Palabras clave: | Fe silicide Chemical transformations Interlayer exchange coupling Magnetic domain in situ annealing Fe–Si multilayer |
Fecha de publicación: | 2014 | Editor: | Elsevier | Citación: | Journal of Magnetism and Magnetic Materials 364: 24-33 (2014) | Resumen: | This work presents the correlation between the morphology and magnetic properties of (Fe/Si)3 multilayers with different Fe layer thicknesses and fixed Si spacer thickness in a broad temperature range (5<T<800K). Films were prepared by thermal evaporation under ultrahigh vacuum onto a buffer layer of Fe/Ag deposited on a GaAs(001) substrate. Transmission electron microscopy reveals good epitaxial growth and phase transformations in the c-FeSi phase formed during deposition as well as upon subsequent annealing of the sample up to 800 K. Remanence to saturation magnetization MR/MS ratios and saturation fields are related to several types of interlayer exchange coupling. 90°-coupling and a superposition of 90° and antiferromagnetic interlayer exchange coupling are found depending on the Fe layer thickness. Magnetization curves were investigated as a function of temperature by in situ annealing. They show an irreversible thermal process as temperature increases from 300 to 450 K that is correlated to the formation of a ferromagnetic silicide phase. At higher temperature this phase transforms into a paramagnetic Fe-Si phase. © 2014 Elsevier B.V. | Descripción: | et al. | URI: | http://hdl.handle.net/10261/113063 | DOI: | 10.1016/j.jmmm.2014.04.029 | Identificadores: | doi: 10.1016/j.jmmm.2014.04.029 issn: 0304-8853 |
| Aparece en las colecciones: | (CINN) Artículos (ICMA) Artículos |
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