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arXiv · 1711.03858

Impact of organic capping layer on the magnetic anisotropy of ultrathin Co films

Leszek Gladczuk·Kinga Lasek·Roman Puzniak·Maciej Sawicki·Pavlo Aleshkevych·Wojciech Paszkowicz·Roman Minikayev·Iraida N. Demchenko·Yevgen Syryanyy·Piotr Przyslupski
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Abstract

Using combined magnetometry and ferromagnetic resonance studies, it is shown that introduction of a hydrocarbon cover layer leads to an increase of the contribution of the surface anisotropy to the effective magnetic anisotropy energy of hexagonal close-packed 0001 cobalt films, largely enhancing the perpendicular anisotropy. Due to a weak electronic interaction of the organic molecules with the Co atoms, an increase of surface anisotropy could be explained by the presence of an electric field at the organic-material/Co interface and by modification of surface atoms charge configuration.

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Leszek Gladczuk, Kinga Lasek, Roman Puzniak, Maciej Sawicki, Pavlo Aleshkevych, Wojciech Paszkowicz, Roman Minikayev, Iraida N. Demchenko, Yevgen Syryanyy, Piotr Przyslupski. 2017-11-10. Impact of organic capping layer on the magnetic anisotropy of ultrathin Co films. https://doi.org/10.1088/1361-6463%2Faa9308

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