Thermomagnetic behaviour and compositional irreversibility on (Fe/Si)$_{3}$ multilayer films

Badía-Romano, L.; Hierro-Rodriguez, A.; Bartolomé, F.; Ibarra, M. R.; Bartolomé, J.; Rubín, J.; Varnakov, S. N.; Magén, C.; Alameda, J. M.; Ovchinnikov, S. G.; Martín, J. I.; Sesé, J.; Bürgler, Daniel; Komogortsev, S. V.

doi:10.1016/j.jmmm.2014.04.029

Journal Article

FZJ-2015-00200

Thermomagnetic behaviour and compositional irreversibility on (Fe/Si)$_{3}$ multilayer films

Badía-Romano, L. (Corresponding Author) ; Rubín, J. ; Magén, C. ; Bartolomé, F. ; Sesé, J. ; Ibarra, M. R. ; Bartolomé, J. ; Hierro-Rodriguez, A. ; Martín, J. I. ; Alameda, J. M. ; Bürgler, D.FZJ* ; Varnakov, S. N. ; Komogortsev, S. V. ; Ovchinnikov, S. G.

2014
North-Holland Publ. Co. Amsterdam

Journal of magnetism and magnetic materials 364, 24 - 33 (2014) [10.1016/j.jmmm.2014.04.029]

This record in other databases:

Please use a persistent id in citations: doi:10.1016/j.jmmm.2014.04.029

Abstract: 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 (View the MathML source5<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.

Classification: