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High magnetostriction in low applied magnetic fields in amorphous Tb-Fe (hard)/Fe-B (soft) multilayers

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5 Author(s)
Prados, C. ; Dept. of Phys. & Astron., Delaware Univ., Newark, DE, USA ; Panagiotopoulus, I. ; Hadjipanayis, G.C. ; Freijo, J.J.
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High magnetostrictive amorphous multilayers consisting of Tb-Fe (hard) and Fe-B (soft) bilayers have been grown by dc sputtering. The layers have been found to be magnetically coupled for layer thicknesses between 25 and 75 Å. As an effect of the coupling, high magnetostriction values (around 5×10-4) are obtained with low coercive fields (around 100 Oe). A qualitative magnetic model has been developed to account for the influence of the size and magnetic parameters on the multilayer magnetostriction and its saturation field, and the observed magnetization processes

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Magnetics, IEEE Transactions on  (Volume:33 ,  Issue: 5 )