Synthesis and magnetic properties of two-dimensional vanadium(IV) oxide nanostructures on silica surface |
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| Authors: | O. M. Osmolovskaya V. M. Smirnov A. A. Selyutin |
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| Affiliation: | (1) St. Petersburg State University, Universitetskii pr. 26, St. Petersburg, 198504, Russia |
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| Abstract: | Vanadium(IV) oxide nanolayers on silica surface were prepared for the first time. Samples characterized by different degrees of surface coverage by vanadium(IV)-oxygen groups were studied. Samples containing only vanadium(IV) ions and both vanadium(IV) and vanadium(V) ions were obtained. The size effect on the phase transition parameters was determined by studying magnetic properties of vanadium(IV) oxide nanolayers. The phase transition temperature ranges from 140 to 220 K, depending on surface concentration of vanadium(IV) ions and their environment. |
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