Rev.Adv.Mater.Sci.(RAMS)
No 1, Vol. 8, 2004, pages 33-36

MAGNETIC NANOSTRUCTURE OF THE Fe-Ti ALLOY LAYERS PRODUCED BY IMPULSE PLASMA DEPOSITION METHOD

Katarzyna Nowakowska-Langier, Emil Wierzbiński and Krzysztof Zdunek

Abstract

The Fe-Ti layers were produced by the impulse plasma method (IPD) in two impulse plasma coaxial accelerators, each equipped with an internal electrode made of Fe or Ti, which functioned as the source of the alloying components of the layer material. The successive portions of Fe and Ti were deposited independently at separated time intervals, according to the schedule that specified the number and proportion of the impulses generated by each accelerator. The magnetic nanostructure and the morphology of the deposited Fe-Ti layers were investigated by Magnetic Force Microscopy (MFM) and Scanning Electron Microscopy (SEM) techniques, respectively. Magnetic structure was obtained for the layers in accordance with the Fe/Ti ratio= 5/1 and 2/1. The surface morphology is very similar to the magnetic contrast in the layers. It is interesting to note that the magnetic domain size in the magnetic contrast is related to the characteristic size in the surface morphology. We suppose that the light and dark contrasts in the magnetic structure correspond to the ferromagnetic phases i. e. α -Fe or bcc-Fe(Ti) and to the paramagnetic phases i. e. Ti or inter-metallic phases, respectively.

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