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Magnetic and magneto-optical properties of (Co-Bi)/Pt and Co/(Pt-Bi) multilayers

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4 Author(s)
T. Suzuki ; Almaden Res. Center, IBM Res. Div., San Jose, CA, USA ; S. Iwata ; W. Brandle ; D. Weller

Both the magnetization and perpendicular magnetic anisotropy at 300 K decrease with Bi content x in (Co1-xBix)/Pt multilayers, whereas the magnetization increases with x in (Co/Pt1-xBix). The maximum magneto-optical Kerr rotation increases with x up to x=0.12, then decreasing with x for (CoBi/Pt). On the other hand, the rotation decreases with x in (Co/PtBi). The photon energy for the maximum polar Kerr rotation becomes smaller with x for (Co/PtBi), but it remains unchanged for (CoBi/Pt)

Published in:

IEEE Transactions on Magnetics  (Volume:30 ,  Issue: 6 )