13 research outputs found

    Regional development and banking activities

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    This article is a continuation of studies devoted to the interaction of the region and its banking system. The research object in this article is the banking system of the Rostov region, the Southern Federal District, and its impact on the acceleration of socioeconomic development of both the regions. The subject of the study is interaction of banks with the real sector of the economy and the population of the region. The authors analyzed the scientific sources exploring the interaction of the banking and real sectors of the economy and methodological approaches to the analysis of banking activities’s effects on the region and its socio-economic indicators. Based on econometric modeling, quantitative and qualitative regularities of the indicators are revealed. As a result, authors concluded that the growth in the total volume of profits received by existing credit institutions contributes to the growth of such important socio-economic indicators like Gross Regional Product, internal costs of research and development, labor productivity, fixed asset investments, per capita income, growth of deposits attracted by credit institutions, as well as the growth in the amount of debt on loans extended by credit institutions to legal entities and individuals.peer-reviewe

    Twin-boundary engineering and thickness effect on strontium-barium niobate thin films on MgO substrate

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    International audienceThe Sr0.5Ba0.5Nb2O6 (SBN50) films with different thicknesses synthesized by a high-current discharge rfsputtering in an oxygen atmosphere. All synthesized films have the structure of tetragonal tungsten bronze. The dependence of the unit cell parameters of the film material demonstrates a size effect, the magnitude of which is comparable to the distortions resulting from the ferroelectric relaxor phase transformation of SBN crystals of the same composition. The twinning of the same type is observed in all films when the twinned film components are rotated relative to each other by 36.8 degrees around the fourth-order rotational axis. The orientation of the films relative to the substrate can be written as [001]SBN parallel to[001]MgO; [100] SBN+parallel to[310]MgO and [100]SBN-parallel to[3 (1) over bar0]MgO, where the sign ``+'' and ``-'' marks the twin components. It is noteworthy that such an orientation of the film relative to the substrate corresponds to the maximum possible tensile stress of heteroepitaxial films acting from the MgO single crystal substrate. This type of twinning is not typical for SBN50 films on MgO grown by other synthesis methods. The appearance of this unusual type of twinning is associated with the peculiarities of synthesis. At the initial moment of sputtering, the substrate is additionally heated by the sputtered substance's plasma. The substrate temperature can also be used in other synthesis methods to control twinning and strain in barium strontium niobate thin films. (C) 2021 Elsevier B.V. All rights reserved

    Direct transition from the rhombohedral ferroelectric to the paraelectric phase in a (Ba,Sr)TiO

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    A heteroepitaxial (200 nm thick) Ba0.8Sr0.2TiO3\text{Ba}_{0.8}\text{Sr}_{0.2}\text{TiO}_{3} (BST) thin film was deposited on a (111)MgO substrate using rf sputtering. X-ray diffraction examinations confirmed epitaxial growth and rhombohedral symmetry of the film (a=0.39616(2) nma = 0.39616(2)\ \text{nm} and α=89.52(3)∘\alpha = 89.52(3)^\circ ) at room temperature. Polarized Raman spectra of the film were studied in the temperature range from 100 to 420 K. In contrast to a BST thin film grown on (001)MgO, the observed linear temperature dependence of the squared soft mode frequency suggests the displacive character of the ferroelectric-paraelectric phase transition in a BST thin film on (111)MgO
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