Magneto-optical anisometry of ultrathin cobalt films

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Grolier, V. | Ferré, J. | Maziewski, A. | Stefanowicz, E. | Renard, D.

Edité par CCSD ; American Institute of Physics -

International audience. The advantage of magneto-optics to measure magnetic anisotropy constants in ultrathin films exhibiting perpendicular spin anisotropy is reported. This is illustrated for Au/Co/Au sandwiches with Co layer thickness ranging from 8 to 15 Å. We stress the importance of preliminary measurements always necessary to define the (H∥,H⊥) region in which a homogeneous spin rotation occurs. These results confirm the existence of interface anisotropy and lead to its estimation Ks=0.56 erg/cm 2 whereas the volumic term is shown to be Kv=7. 5×106 erg/cm3.

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