Voronezh Institute of the State Fire Service of Russian

Voronezh, Russia

Voronezh Institute of the State Fire Service of Russian

Voronezh, Russia
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Sumets M.,Voronezh Institute of the State Fire Service of Russian | Ievlev V.,Voronezh Institute of the State Fire Service of Russian | Kostyuchenko A.,Voronezh Institute of the State Fire Service of Russian | Kuzmina V.,Voronezh Institute of the State Fire Service of Russian
Molecular Crystals and Liquid Crystals | Year: 2014

Polycrystalline LiNbO3 films on (001)Si substrate were grown by radio-frequency magnetron sputtering process at different sputtering conditions. X-ray diffraction analysis showed that films formed in Ar environment (P = 5.0 × 10-1 Pa) having two-phase composition (LiNbO3, LiNb3O8) transformed into c-Axes-oriented LiNbO3 films when Ar pressure declined up to P = 1.5 × 10-1 Pa. This induced an increase in positive oxide charge and coercive field due to formation of defects in the LiNbO3 layer. Using Ar + O2 reactive gas mixture led to decline in defect formation (positive oxide charge) and coercive field. Current-voltage and capacitance-voltage analyses demonstrated that barrier properties of the Si-LiNbO3 heterojunctions are affected by the plasma composition. © 2014 Copyright © Taylor & Francis Group, LLC.

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