TY  - JOUR
AU  - Badía-Romano, L.
AU  - Rubín, J.
AU  - Magén, C.
AU  - Bartolomé, F.
AU  - Sesé, J.
AU  - Ibarra, M. R.
AU  - Bartolomé, J.
AU  - Hierro-Rodriguez, A.
AU  - Martín, J. I.
AU  - Alameda, J. M.
AU  - Bürgler, Daniel
AU  - Varnakov, S. N.
AU  - Komogortsev, S. V.
AU  - Ovchinnikov, S. G.
TI  - Thermomagnetic behaviour and compositional irreversibility on (Fe/Si)$_{3}$ multilayer films
JO  - Journal of magnetism and magnetic materials
VL  - 364
SN  - 0304-8853
CY  - Amsterdam
PB  - North-Holland Publ. Co.
M1  - FZJ-2015-00200
SP  - 24 - 33
PY  - 2014
AB  - 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.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000335910100005
DO  - DOI:10.1016/j.jmmm.2014.04.029
UR  - https://juser.fz-juelich.de/record/186112
ER  -