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arxiv: 0709.2581 · v2 · submitted 2007-09-17 · ❄️ cond-mat.mes-hall · cond-mat.mtrl-sci

X-Ray Analysis of Oxygen-induced Perpendicular Magnetic Anisotropy in Pt/Co/AlOx trilayer

Aur\'elien Manchon (SPINTEC) , Stefania Pizzini (NEEL) , Jan Vogel (NEEL) , Vojteh Uhlir (NEEL) , Lucien Lombard (SPINTEC) , Clarisse Ducruet (SPINTEC) , St\'ephane Auffret (SPINTEC) , Bernard Rodmacq (SPINTEC)
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Bernard Dieny (SPINTEC) Michael Hochstrasser Giancarlo Panaccione
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classification ❄️ cond-mat.mes-hall cond-mat.mtrl-sci
keywords magneticx-rayanisotropyperpendicularaloxspectroscopyannealingmeasurements
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X-ray spectroscopy measurements have been performed on a series of Pt/Co/AlOx trilayers to investigate the role of Co oxidation in the perpendicular magnetic anisotropy of the Co/AlOx interface. It is observed that high temperature annealing modifies the magnetic properties of the Co layer, inducing an enhancement of the perpendicular magnetic anisotropy. The microscopic structural properties are analyzed via X-ray Absorption Spectroscopy, X-ray Magnetic Circular Dichroism and X-ray Photoelectron Spectroscopy measurements. It is shown that annealing enhances the amount of interfacial oxide, which may be at the origin of a strong perpendicular magnetic anisotropy.

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