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Density of Unoccupied Electronic States of the Ultrathin Layers of Dibromo-Bianthracene on the Surface of Layer-by-Layer Grown ZnO 逐层生长氧化锌表面二溴卞蒽超薄层的未占电子态密度
IF 0.6 4区 材料科学
Crystallography Reports Pub Date : 2024-04-16 DOI: 10.1134/S1063774523601223
A. S. Komolov, E. F. Lazneva, V. S. Sobolev, S. A. Pshenichnyuk, N. L. Asfandiarov, E. V. Zhizhin, D. A. Pudikov, E. A. Dubov, I. A. Pronin, F. Dj. Akbarova, U. B. Sharopov
{"title":"Density of Unoccupied Electronic States of the Ultrathin Layers of Dibromo-Bianthracene on the Surface of Layer-by-Layer Grown ZnO","authors":"A. S. Komolov,&nbsp;E. F. Lazneva,&nbsp;V. S. Sobolev,&nbsp;S. A. Pshenichnyuk,&nbsp;N. L. Asfandiarov,&nbsp;E. V. Zhizhin,&nbsp;D. A. Pudikov,&nbsp;E. A. Dubov,&nbsp;I. A. Pronin,&nbsp;F. Dj. Akbarova,&nbsp;U. B. Sharopov","doi":"10.1134/S1063774523601223","DOIUrl":"10.1134/S1063774523601223","url":null,"abstract":"<p>The surface topography and density of unoccupied electronic states at thermal deposition of ultrathin dibromo-bianthracene films on the ZnO surface have been studied. The electronic characteristics of unoccupied electronic states during growth of dibromo-bianthracene films to a thickness of 10 nm have been investigated by total current spectroscopy using a probe electron beam. The experimental dependences have been analyzed using theoretical calculation of the orbital energies for dibromo-bianthracene molecules by the method of density functional theory (DFT).</p>","PeriodicalId":527,"journal":{"name":"Crystallography Reports","volume":"69 1","pages":"109 - 113"},"PeriodicalIF":0.6,"publicationDate":"2024-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140616780","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Manifestation of Hydride Phase Transformations in the Hydrogen Permeability of Polycrystalline Titanium and Zirconium 多晶钛和锆的透氢性中氢化物相变的表现形式
IF 0.6 4区 材料科学
Crystallography Reports Pub Date : 2024-04-16 DOI: 10.1134/S1063774523601272
E. A. Denisov, V. A. Dmitriev
{"title":"Manifestation of Hydride Phase Transformations in the Hydrogen Permeability of Polycrystalline Titanium and Zirconium","authors":"E. A. Denisov,&nbsp;V. A. Dmitriev","doi":"10.1134/S1063774523601272","DOIUrl":"10.1134/S1063774523601272","url":null,"abstract":"<p>Titanium and zirconium alloys are indispensable structural materials in many technical applications due to their unique mechanical and physicochemical properties. Titanium and zirconium belong to the fourth (“titanium”) group, due to which one would expect them to exhibit a similar character of hydrogen permeability through alloys of these metals. The results of experiments on the hydrogen permeability of these alloys are compared and analyzed. It is revealed that the hydrogen permeation kinetics for both alloys is mainly determined by the low rate of surface processes and phase transformations, occurring as a result of increasing hydrogen concentration. It is shown that the hydrogen permeability method can be used to find the terminal solid solubility of hydrogen in metals.</p>","PeriodicalId":527,"journal":{"name":"Crystallography Reports","volume":"69 1","pages":"45 - 52"},"PeriodicalIF":0.6,"publicationDate":"2024-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140616784","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Field Ion Sources for Research and Modification of the Structure of Amorphous and Crystalline Materials 用于研究和改变非晶和晶体材料结构的场离子源
IF 0.6 4区 材料科学
Crystallography Reports Pub Date : 2024-04-16 DOI: 10.1134/S1063774523601193
Yu. V. Petrov, O. F. Vyvenko
{"title":"Field Ion Sources for Research and Modification of the Structure of Amorphous and Crystalline Materials","authors":"Yu. V. Petrov,&nbsp;O. F. Vyvenko","doi":"10.1134/S1063774523601193","DOIUrl":"10.1134/S1063774523601193","url":null,"abstract":"<p>Systems with a focused ion beam, using gas field ion sources, are described. The principles of operation and ways of formation of these sources, in which the effective ionization region is determined by sizes of a single atom, are considered in the historical context. The described systems have a wide range of applications, both in the field of scanning ion microscopy in combination with various analytical methods and in the field of high-resolution modification of electrical, optical, magnetic, and other properties of materials. This modification, based on ion-induced changes in the structure of material, is most pronounced in crystalline semiconductors, superconductors, and magnets.</p>","PeriodicalId":527,"journal":{"name":"Crystallography Reports","volume":"69 1","pages":"2 - 15"},"PeriodicalIF":0.6,"publicationDate":"2024-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140616408","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Luminescence of Oxide Films Obtained by Atomic Layer Deposition 通过原子层沉积获得的氧化物薄膜的发光特性
IF 0.6 4区 材料科学
Crystallography Reports Pub Date : 2024-04-16 DOI: 10.1134/S1063774523601211
A. P. Baraban, V. A. Dmitriev, A. V. Drozd, Yu. V. Petrov, I. E. Gabis, A. A. Selivanov
{"title":"Luminescence of Oxide Films Obtained by Atomic Layer Deposition","authors":"A. P. Baraban,&nbsp;V. A. Dmitriev,&nbsp;A. V. Drozd,&nbsp;Yu. V. Petrov,&nbsp;I. E. Gabis,&nbsp;A. A. Selivanov","doi":"10.1134/S1063774523601211","DOIUrl":"10.1134/S1063774523601211","url":null,"abstract":"<p>The possibilities of the luminescence method for studying Si–oxide and Si–SiO<sub>2</sub>–oxide structures have been demonstrated. A model of the electronic structure of Ta<sub>2</sub>O<sub>5</sub> and TiO<sub>2</sub> layers is proposed, which explains the shape of the spectral luminescence distribution independent of the excitation way. A comparison of the luminescence spectra of single oxide layers with the spectrum of Si–SiO<sub>2</sub>–oxide structures made it possible to draw conclusions about the interaction between layers during layered structure formation and estimate the band gap: 4.4 and 3.3 eV for Ta<sub>2</sub>O<sub>5</sub> and TiO<sub>2</sub>, respectively. The formation of Ta<sub>2</sub>O<sub>5</sub> on the SiO<sub>2</sub> surface led to transformation in the SiO<sub>2</sub> surface region, manifesting itself in weakening of the luminescence band at 1.9 eV and formation of defects (luminescence centers) in the vicinity of 3 eV. Synthesis of TiO<sub>2</sub> on the surface of SiO<sub>2</sub> was not accompanied by any changes in the luminescence spectra.</p>","PeriodicalId":527,"journal":{"name":"Crystallography Reports","volume":"69 1","pages":"85 - 92"},"PeriodicalIF":0.6,"publicationDate":"2024-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140616410","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Structure and Electrical Conductivity of Thin AlN Films on Si 硅基氮化铝薄膜的结构和导电性
IF 0.6 4区 材料科学
Crystallography Reports Pub Date : 2024-04-16 DOI: 10.1134/S1063774523601260
N. V. Bazlov, O. F. Vyvenko, N. V. Niyazova, I. M. Kotina, M. V. Trushin, A. S. Bondarenko
{"title":"Structure and Electrical Conductivity of Thin AlN Films on Si","authors":"N. V. Bazlov,&nbsp;O. F. Vyvenko,&nbsp;N. V. Niyazova,&nbsp;I. M. Kotina,&nbsp;M. V. Trushin,&nbsp;A. S. Bondarenko","doi":"10.1134/S1063774523601260","DOIUrl":"10.1134/S1063774523601260","url":null,"abstract":"<p>Aluminum nitride films have been synthesized by reactive magnetron sputtering on <i>n</i>-Si(100) substrates. AlN layers with thicknesses from 2 to 150 nm were obtained to establish a correlation between the structure of the films and their electrical conductivity. Electron microscopy revealed that the amorphous structure of the films passes to nanocrystalline one while moving away from the substrate surface. Films with thicknesses below 20 nm had a high conductivity: up to 10 (Ω cm)<sup>–1</sup>; with an increase in thickness the conductivity dropped to 10<sup>–7</sup> (Ω cm)<sup>–1</sup>. The high conductivity of thin AlN layers is believed to be due to the high density of the boundaries of grains built-in into amorphous matrix.</p>","PeriodicalId":527,"journal":{"name":"Crystallography Reports","volume":"69 1","pages":"65 - 72"},"PeriodicalIF":0.6,"publicationDate":"2024-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140616572","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The Effect of Self-Assembly of Nanoparticles under a Plasma Discharge in a Capillary Electrode 毛细管电极中等离子体放电下纳米颗粒的自组装效应
IF 0.6 4区 材料科学
Crystallography Reports Pub Date : 2024-04-16 DOI: 10.1134/S1063774523601338
A. M. Yafyasov, V. B. Bogevolnov, V. Yu. Mikhailovskii
{"title":"The Effect of Self-Assembly of Nanoparticles under a Plasma Discharge in a Capillary Electrode","authors":"A. M. Yafyasov,&nbsp;V. B. Bogevolnov,&nbsp;V. Yu. Mikhailovskii","doi":"10.1134/S1063774523601338","DOIUrl":"10.1134/S1063774523601338","url":null,"abstract":"<p>The synthesis of submicron particles in the nonequilibrium processes occurring in a capillary electrode–aqueous electrolyte system on noble metal (gold, silver, or platinum) electrodes under the action of microsecond current pulses is reported. The variations in the value and sign of a voltage pulse on the “sacrificial” electrode affect the shape and composition of nanoparticles. Nanostructures of characteristic crystallographic shapes are obtained.</p>","PeriodicalId":527,"journal":{"name":"Crystallography Reports","volume":"69 1","pages":"114 - 118"},"PeriodicalIF":0.6,"publicationDate":"2024-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140616574","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Synthesis of a Thin Metal Hydride Mg2NiH4 Film on a Nickel Substrate 在镍基底上合成金属氢化物 Mg2NiH4 薄膜
IF 0.6 4区 材料科学
Crystallography Reports Pub Date : 2024-04-16 DOI: 10.1134/S1063774523601259
A. P. Baraban, A. P. Voyt, I. E. Gabis, D. I. Elets, A. A. Levin, D. A. Zaytsev
{"title":"Synthesis of a Thin Metal Hydride Mg2NiH4 Film on a Nickel Substrate","authors":"A. P. Baraban,&nbsp;A. P. Voyt,&nbsp;I. E. Gabis,&nbsp;D. I. Elets,&nbsp;A. A. Levin,&nbsp;D. A. Zaytsev","doi":"10.1134/S1063774523601259","DOIUrl":"10.1134/S1063774523601259","url":null,"abstract":"<p>This work is a continuation of the previous study of the synthesis of intermetallic hydride compound Mg<sub>2</sub>NiH<sub>4</sub> in the reaction between a nickel foil and magnesium hydride MgH<sub>2</sub> in a hydrogen atmosphere at pressures exceeding the decomposition pressures of both MgH<sub>2</sub> and Mg<sub>2</sub>NiH<sub>4</sub>. The synthesis was performed at temperatures of 400 and 475°С. With allowance for the results obtained previously at a temperature 450°С, it was found that, after some incubation time, the thickness of grown Mg<sub>2</sub>NiH<sub>4</sub> film depends linearly on time. During incubation, a sublayer of intermetallic compound MgNi<sub>2</sub> is synthesized. The set of these data validates the previously proposed synthesis mechanism, where the limiting factor is the diffusion entry of nickel atoms with a constant rate over the MgNi<sub>2</sub> sublayer. Based on the analysis of X-ray diffraction (XRD) data, it was concluded that the MgNi<sub>2</sub> sublayer thickness is approximately the same for all three synthesis temperatures. The film growth rates were found for all three temperatures using thermal desorption spectroscopy, and the kinetic parameters of the diffusion of nickel atoms in the sublayer of intermetallic compound MgNi<sub>2</sub> were determined based on these data.</p>","PeriodicalId":527,"journal":{"name":"Crystallography Reports","volume":"69 1","pages":"93 - 101"},"PeriodicalIF":0.6,"publicationDate":"2024-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140616787","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Mineralogical Crystallography: III. Simple Nonmetallic Substances 矿物晶体学：III.简单的非金属物质
IF 0.6 4区 材料科学
Crystallography Reports Pub Date : 2024-03-19 DOI: 10.1134/S1063774523601478
D. Yu. Pushcharovsky
{"title":"Mineralogical Crystallography: III. Simple Nonmetallic Substances","authors":"D. Yu. Pushcharovsky","doi":"10.1134/S1063774523601478","DOIUrl":"10.1134/S1063774523601478","url":null,"abstract":"<p>The most important structure types of nonmetals belonging to the VIII–IV groups and their importance for the development of the ideas about the composition and structure of the deep shells of the Earth and terrestrial-group planets are analyzed. The structural features of gas hydrates and their possible role in geological processes are considered. The structures of inert gases, hydrogen, and astrophysical ices in the Earth and other planets of the Solar system are presented in the light of new data. The modern concepts of the crystal chemistry of carbon polymorphs, genetic types of diamond, the indicator role of inclusions in its crystals, and conditions of its formation in nature and in model experiments are reviewed.</p>","PeriodicalId":527,"journal":{"name":"Crystallography Reports","volume":"68 1 supplement","pages":"S41 - S62"},"PeriodicalIF":0.6,"publicationDate":"2024-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140204506","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Mineralogical Crystallography: X. Carbonates 矿物晶体学：X. 碳酸盐
IF 0.6 4区 材料科学
Crystallography Reports Pub Date : 2024-03-19 DOI: 10.1134/S1063774523601569
D. Yu. Pushcharovsky
{"title":"Mineralogical Crystallography: X. Carbonates","authors":"D. Yu. Pushcharovsky","doi":"10.1134/S1063774523601569","DOIUrl":"10.1134/S1063774523601569","url":null,"abstract":"<p>The minerals belonging to the class of carbonates constitute 18% of the Earth’s sedimentary shell, which is 1.7 wt % of the Earth’s crust mass. Carbonates are the main minerals of marine sediments. This is a widespread but crystallochemically understudied class of minerals, which includes 290 species. Among the 90 anhydrous carbonates, two large groups are distinguished, which include minerals with rhombohedral and orthorhombic symmetries, accumulating 90% of carbon of the Earth’s crust. The characteristic structural features of the main representatives of these groups and other common carbonates are considered. Data on possible transformations of carbonates in deep geospheres are reported.</p>","PeriodicalId":527,"journal":{"name":"Crystallography Reports","volume":"68 1 supplement","pages":"S229 - S238"},"PeriodicalIF":0.6,"publicationDate":"2024-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142412487","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Minerological Crystallography: V. Oxides and Hydroxides 矿物晶体学：V. 氧化物和氢氧化物
IF 0.6 4区 材料科学
Crystallography Reports Pub Date : 2024-03-19 DOI: 10.1134/S1063774523601508
D. Yu. Pushcharovsky
{"title":"Minerological Crystallography: V. Oxides and Hydroxides","authors":"D. Yu. Pushcharovsky","doi":"10.1134/S1063774523601508","DOIUrl":"10.1134/S1063774523601508","url":null,"abstract":"<p>The main structure types of the large group of oxide and hydroxide minerals are characterized. A particular attention is paid to the new data on the structural transformations of high-pressure minerals (which are of geophysical interest) occurring in the deep interior of Earth. These minerals include (Fe,Ni) oxides with ilmenite and post-spinel phase structures, silica polymorphs, etc. The crystal structures of basic minerals of the upper mantle, transition zone, and lower mantle, as well as the minerals of iron–manganese concretions, are characterized. The structural principles of the oxides used in ion batteries as cathode materials are considered.</p>","PeriodicalId":527,"journal":{"name":"Crystallography Reports","volume":"68 1 supplement","pages":"S69 - S104"},"PeriodicalIF":0.6,"publicationDate":"2024-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140205012","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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