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Correlation between domain wall properties and material parameters in amorphous SmCo-films

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4 Author(s)
Gronau, M. ; Ruhr-Universität Bochum, Bochum, F.R.G. ; Goeke, H. ; Schuffler, D. ; Sprenger, S.

Amorphous Sm1-xcox-films with uniaxial in-plane anisotropy with various Co-concentrationsx (.67 leq x leq .91)and various film thicknesses d (10nm leq d leq 350nm) have been prepared by flash-evaporation of SmCo-alloy powders. The saturation magnetization decreases linearly with x in the whole concentration range, whereas the coercive field increases linearly with x down toxapprox74and then decreases. Drastic changes in all magnetic properties occur when at a given chemical composition the film thickness is reduced belowdapprox50nm. Head-on domains are separated by zig-zag walls whose amplitudes are analyzed as a function of the material parameters.

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Magnetics, IEEE Transactions on  (Volume:19 ,  Issue: 5 )