%0 Journal Article
%A Badía-Romano, L.
%A Rubín, J.
%A Magén, C.
%A Bartolomé, F.
%A Sesé, J.
%A Ibarra, M. R.
%A Bartolomé, J.
%A Hierro-Rodriguez, A.
%A Martín, J. I.
%A Alameda, J. M.
%A Bürgler, Daniel
%A Varnakov, S. N.
%A Komogortsev, S. V.
%A Ovchinnikov, S. G.
%T Thermomagnetic behaviour and compositional irreversibility on (Fe/Si)$_{3}$ multilayer films
%J Journal of magnetism and magnetic materials
%V 364
%@ 0304-8853
%C Amsterdam
%I North-Holland Publ. Co.
%M FZJ-2015-00200
%P 24 - 33
%D 2014
%X 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.
%F PUB:(DE-HGF)16
%9 Journal Article
%U <Go to ISI:>//WOS:000335910100005
%R 10.1016/j.jmmm.2014.04.029
%U https://juser.fz-juelich.de/record/186112