Surface magnetic ordering of Fe-O and Ti-O groups disposed on diamagnetic support

Multiplex dependence of the magnetic susceptibility of iron and titanium-ox ygen two-dimensional nanostructures on the amount of metal-oxygen groups de posited on a silica surface was found. The effect of two-dimensional ferrim agnetism was observed. Its appearance is explained by the existence of magn etization areas arising only for certain amounts of Fe-O groups in the surf ace layer of silica. In the case of samples containing surface Ti-O groups, the structure-induced magnetic effect was observed. Such an effect is caus ed by an increase of the diamagnetism polarizing component and by the order ing action of silica support on Ti-O bonds.