On the interface magnetism of thin oxidized co films: orbital and spin moments

An x-ray magnetic circular dichroism study of a polycrystalline Co/CoO bilayer is presented. Using both the chemical specificity and surface sensitivity in the core level techniques, we find that uncompensated Co2+ spin moments participate in the remanent ferromagnetic response of the bilayer that has oxygen nearest neighbors. These are likely located at the Co/CoO interface. As intermixing of magnetic species is not present in Co/CoO, it is concluded that the observed interface moments are due to interface roughness. Given their direction, these moments appear to not directly correlate to the exchange bias in these bilayers. © 2009, Institute of Physics

Keywords

Anisotropy, Magnetism, Oxygen, Magnetic circular dichroism, Spin, Films

Citation

Mulders, A. M., Loosvelt, H., Rodriguez, A. F., Popova, E., Konishi, T., Temst, K., Karis, O., Arvanitis, D., & Van Haesendonck, C. (2009). On the interface magnetism of thin oxidized co films: orbital and spin moments. Journal of Physics: Condensed Matter, 21(12), 124211. doi:10.1088/0953-8984/21/12/124211