M. Getzlaff et al., MAGNETIC-INTERACTIONS IN DIFFERENT OXIDATION-STATES OF THIN COBALT FILMS, Journal of magnetism and magnetic materials, 131(3), 1994, pp. 304-310
Investigations concerning the magnetic interactions of oxygen with thi
n cobalt films evaporated on W(110) were carried out by spin-resolved
photoelectron spectroscopy; in particular modifications of surface mag
netism depending on the chemical state were determined. The formation
of different oxidation states at various substrate temperatures and th
e coexistence of chemisorbed oxygen and antiferromagnetic CoO near the
surface could be impressively demonstrated. The measurements indicate
'magnetically live' adsorbate layers at the surface revealing an indu
ced magnetic moment of the chemisorbed oxygen atoms.