SURFACE MAGNETIC ORDERING OF Fe-O and Ti-O GROUPS DISPOSED ON DIAMAGNETIC SUPPORT

V. M. Smirnov (), N. P. Bobrysheva, M. G. Osmolowsky, V. G. Semenov and I. V. Murin
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V. M. Smirnov: Department of Chemistry, St. Petersburg State University, Universitetskii pr. 2, Petrodvoretz, St. Petersburg, 198504, Russia
N. P. Bobrysheva: Department of Chemistry, St. Petersburg State University, Universitetskii pr. 2, Petrodvoretz, St. Petersburg, 198504, Russia
M. G. Osmolowsky: Department of Chemistry, St. Petersburg State University, Universitetskii pr. 2, Petrodvoretz, St. Petersburg, 198504, Russia
V. G. Semenov: Department of Chemistry, St. Petersburg State University, Universitetskii pr. 2, Petrodvoretz, St. Petersburg, 198504, Russia
I. V. Murin: Department of Chemistry, St. Petersburg State University, Universitetskii pr. 2, Petrodvoretz, St. Petersburg, 198504, Russia

Surface Review and Letters (SRL), 2001, vol. 08, issue 03n04, 295-302

Abstract: Multiplex dependence of the magnetic susceptibility of iron and titanium-oxygen two-dimensional nanostructures on the amount of metal–oxygen groups deposited on a silica surface was found. The effect of two-dimensional ferrimagnetism was observed. Its appearance is explained by the existence of magnetization areas arising only for certain amounts of Fe–O groups in the surface layer of silica. In the case of samples containing surface Ti–O groups, the structure-induced magnetic effect was observed. Such an effect is caused by an increase of the diamagnetism polarizing component and by the ordering action of silica support on Ti–O bonds.

Date: 2001
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DOI: 10.1142/S0218625X01001063

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