Magnetic and magneto-optical properties of Tb/Fe multilayers

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Pommier, J. | Jamet, J.P. | Ferré, J. | Houdy, P. | Boher, P. | Pierre, F.

Edité par CCSD ; Elsevier -

International audience. We report on magnetic and magneto-optical properties of [Tb/Fe]n multilayers. The dependence on Tb and Fe thicknesses and on the stacking parameter n have been studied. For a thick sample (n=40), we confirm that the ferrimagnetic or compensation temperatures and the magneto-optical effects are close to those deduced previously for Tbx-Fe1-x metallic alloys having the same nominal composition. Thinner samples (n<40) exhibit slightly different magnetic properties. In particular, a transition from in-plane to out-of-plane anisotropy for low values of n is evidenced and discussed. Magnetization reversal dynamics are studied and analyzed from magnetic after-effect measurements and microscopic domain imaging. Typical values of Barkhausen volumes are deduced.

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