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Mesoscopic Misfit: A New View on the Epitaxy of Nanostructures 介观错位：纳米结构外延的新视角
IF 0.6 4区 材料科学
Crystallography Reports Pub Date : 2024-07-25 DOI: 10.1134/S1063774523700049
D. I. Bazhanov
{"title":"Mesoscopic Misfit: A New View on the Epitaxy of Nanostructures","authors":"D. I. Bazhanov","doi":"10.1134/S1063774523700049","DOIUrl":"10.1134/S1063774523700049","url":null,"abstract":"<p>Stresses and strains arising from the mesoscopic mismatch at interfaces may affect in diverse ways the properties of surfaces and deposited nanostructures. The reasons for the occurrence of mesoscopic mismatch on metal surfaces and its consequences are briefly reviewed. It is shown how this mismatch affects the growth, structure, and morphology of thin films and nanostructures in the early stages of epitaxy.</p>","PeriodicalId":527,"journal":{"name":"Crystallography Reports","volume":"69 3","pages":"289 - 294"},"PeriodicalIF":0.6,"publicationDate":"2024-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141780793","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
Interaction of Al2O3 Melt with Nitrogen at High Temperatures and Pressure of 1 Bar 高温和 1 巴压力下 Al2O3 熔体与氮气的相互作用
IF 0.6 4区 材料科学
Crystallography Reports Pub Date : 2024-07-25 DOI: 10.1134/S1063774524600042
D. V. Kostomarov, V. A. Fedorov
{"title":"Interaction of Al2O3 Melt with Nitrogen at High Temperatures and Pressure of 1 Bar","authors":"D. V. Kostomarov,&nbsp;V. A. Fedorov","doi":"10.1134/S1063774524600042","DOIUrl":"10.1134/S1063774524600042","url":null,"abstract":"<p>The main interaction reactions in the Al<sub>2</sub>O<sub>3</sub>−N<sub>2</sub> system are determined for a temperature of 2400 K and pressure of 1 bar. It is found that, in the absence of direct interaction of nitrogen (molecular and atomic) with the melt, chemical reactions may occur between nitrogen and the products of Al<sub>2</sub>O<sub>3</sub> melt dissociative evaporation. The reactions of nitrogen oxidation and the interaction reactions between nitrogen oxides and the melt, both direct and with participation of elementary oxygen or gaseous aluminum oxides, are determined. It is shown that the elementary nitrogen forms may interact with melt jointly with nitrogen oxides and (or) with all Al-containing components of the system. The concentrations of the gaseous materials that are in equilibrium with Al<sub>2</sub>O<sub>3</sub> are calculated by the Monte Carlo method.</p>","PeriodicalId":527,"journal":{"name":"Crystallography Reports","volume":"69 3","pages":"446 - 451"},"PeriodicalIF":0.6,"publicationDate":"2024-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141780427","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
Localization of Aluminum in ZnO:Al Layers during Magnetron Sputtering Deposition 磁控溅射沉积过程中 ZnO:Al 层中铝的定位
IF 0.6 4区 材料科学
Crystallography Reports Pub Date : 2024-06-06 DOI: 10.1134/S1063774524600236
A. Sh. Asvarov, A. E. Muslimov, V. M. Kanevsky, A. K. Akhmedov, A. Kh. Abduev, Z. Kh. Kalazhokov
{"title":"Localization of Aluminum in ZnO:Al Layers during Magnetron Sputtering Deposition","authors":"A. Sh. Asvarov,&nbsp;A. E. Muslimov,&nbsp;V. M. Kanevsky,&nbsp;A. K. Akhmedov,&nbsp;A. Kh. Abduev,&nbsp;Z. Kh. Kalazhokov","doi":"10.1134/S1063774524600236","DOIUrl":"10.1134/S1063774524600236","url":null,"abstract":"<p>The specific features of aluminum localization and the mechanism of formation of donor centers in ZnO:Al layers synthesized by rf magnetron sputtering have been investigated. It is shown that aluminum is mainly localized on intergranular boundaries of zinc oxide in the intrinsic oxide phase. The mechanism of Al oxidation on grain boundaries depends strongly on the oxygen content in the working chamber: during sputtering in a pure argon atmosphere with oxygen deficit, aluminum oxidation occurs as a result of the interaction of the surface layer of zinc oxide crystallites with oxygen, which leads to the formation of surface donor centers on grain boundaries. With an increase in partial oxygen pressure aluminum is mainly oxidized by the oxygen from the gas atmosphere, forming an intrinsic barrier phase on grain boundaries.</p>","PeriodicalId":527,"journal":{"name":"Crystallography Reports","volume":"69 2","pages":"226 - 234"},"PeriodicalIF":0.6,"publicationDate":"2024-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141523086","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
Oligomerization of the IHF Protein in the Presence of Metal Cations 金属阳离子存在时 IHF 蛋白的寡聚化
IF 0.6 4区 材料科学
Crystallography Reports Pub Date : 2024-06-06 DOI: 10.1134/S1063774524600133
A. M. Gordienko, L. A. Dadinova, M. V. Petoukhov, A. A. Mozhaev, V. A. Manuvera, V. N. Lazarev, E. V. Shtykova
{"title":"Oligomerization of the IHF Protein in the Presence of Metal Cations","authors":"A. M. Gordienko,&nbsp;L. A. Dadinova,&nbsp;M. V. Petoukhov,&nbsp;A. A. Mozhaev,&nbsp;V. A. Manuvera,&nbsp;V. N. Lazarev,&nbsp;E. V. Shtykova","doi":"10.1134/S1063774524600133","DOIUrl":"10.1134/S1063774524600133","url":null,"abstract":"<p>The oligomeric state of the nucleoid-associated protein IHF (integration host factor) plays a significant role in the organization and compaction of the bacterial nucleoid and also in the evolution of bacterial resistance to unfavorable environmental conditions, in particular to antibiotics. Although IHF was identified more than 25 years ago, the molecular mechanisms of its participation in these processes are poorly understood. Using small-angle X-ray scattering, it was demonstrated for the first time that there are different oligomeric states of IHF in an aqueous medium depending on the presence of metal cations. It was found that the presence of Mg<sup>2+</sup> and K<sup>+</sup> ions hinders the formation of high-order oligomers of IHF. The results of this study may be useful in the development of strategies against bacterial resistance to drugs.</p>","PeriodicalId":527,"journal":{"name":"Crystallography Reports","volume":"69 2","pages":"206 - 213"},"PeriodicalIF":0.6,"publicationDate":"2024-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141523083","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
X-ray Structural Studies of Proteins at the Shubnikov Institute of Crystallography of the Russian Academy of Sciences 俄罗斯科学院舒布尼科夫晶体学研究所的蛋白质 X 射线结构研究
IF 0.6 4区 材料科学
Crystallography Reports Pub Date : 2024-06-06 DOI: 10.1134/S1063774524600078
I. P. Kuranova, A. A. Lashkov, V. R. Samygina
{"title":"X-ray Structural Studies of Proteins at the Shubnikov Institute of Crystallography of the Russian Academy of Sciences","authors":"I. P. Kuranova,&nbsp;A. A. Lashkov,&nbsp;V. R. Samygina","doi":"10.1134/S1063774524600078","DOIUrl":"10.1134/S1063774524600078","url":null,"abstract":"<p>The development and formation of X-ray crystallography of macromolecules, or protein crystallography, is one of the most important achievements of science in the 20th century. The possibility of establishing the three-dimensional structures of macromolecules of proteins and nucleic acids at atomic level has ensured the rapid development of molecular biology, biochemistry, bioengineering, and biotechnology and allowed researchers to reach the modern level of pharmacology. The review considers the results of studies of protein structures performed at the Shubnikov Institute of Crystallography of the Russian Academy of Sciences from the 1960s up to now.</p>","PeriodicalId":527,"journal":{"name":"Crystallography Reports","volume":"69 2","pages":"121 - 138"},"PeriodicalIF":0.6,"publicationDate":"2024-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141548332","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
Microstructure of Gold Nanoparticles Obtained from a Solution of Hydrochloroauric Acid by Picosecond Laser Irradiation 利用皮秒激光辐照从盐酸溶液中获得的金纳米粒子的微观结构
IF 0.6 4区 材料科学
Crystallography Reports Pub Date : 2024-06-06 DOI: 10.1134/S1063774524600017
A. L. Vasiliev, A. G. Ivanova, V. I. Bondarenko, A. L. Golovin, V. V. Kononenko, K. Kh. Ashikkalieva, E. V. Zavedeev, V. I. Konov
{"title":"Microstructure of Gold Nanoparticles Obtained from a Solution of Hydrochloroauric Acid by Picosecond Laser Irradiation","authors":"A. L. Vasiliev,&nbsp;A. G. Ivanova,&nbsp;V. I. Bondarenko,&nbsp;A. L. Golovin,&nbsp;V. V. Kononenko,&nbsp;K. Kh. Ashikkalieva,&nbsp;E. V. Zavedeev,&nbsp;V. I. Konov","doi":"10.1134/S1063774524600017","DOIUrl":"10.1134/S1063774524600017","url":null,"abstract":"<p>The morphology and crystal structure of Au nanoparticles obtained by irradiating a solution of hydrochloroauric acid HAuCl<sub>4</sub> with laser pulses have been investigated by transmission electron microscopy, electron diffraction, and electron tomography. Along with round and shapeless particles, characterized by a cubic structure with twins, there are flat particles with trigonal morphology. They have a layered microstructure, with alternation of face-centered cubic and close-packed hexagonal crystal structures of layers oriented parallel to the base prism planes.</p>","PeriodicalId":527,"journal":{"name":"Crystallography Reports","volume":"69 2","pages":"185 - 192"},"PeriodicalIF":0.6,"publicationDate":"2024-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141548337","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
Peculiarities of the Synthesis of LiRF4 Nanoparticles (R = Er–Lu) by High-Temperature Coprecipitation and Their Photoluminescent Properties 高温共沉淀法合成 LiRF4 纳米粒子（R = Er-Lu）的特殊性及其光致发光特性
IF 0.6 4区 材料科学
Crystallography Reports Pub Date : 2024-06-06 DOI: 10.1134/S1063774524600169
A. V. Koshelev, V. V. Artemov, N. A. Arkharova, M. S. Seyed Dorraji, D. N. Karimov
{"title":"Peculiarities of the Synthesis of LiRF4 Nanoparticles (R = Er–Lu) by High-Temperature Coprecipitation and Their Photoluminescent Properties","authors":"A. V. Koshelev,&nbsp;V. V. Artemov,&nbsp;N. A. Arkharova,&nbsp;M. S. Seyed Dorraji,&nbsp;D. N. Karimov","doi":"10.1134/S1063774524600169","DOIUrl":"10.1134/S1063774524600169","url":null,"abstract":"<p>Li<i>R</i>F<sub>4</sub> (<i>R</i> = Y, Yb, Lu) nanoparticles (NPs), co-doped by Yb<sup>3+</sup>/Er<sup>3+</sup> and Yb<sup>3+</sup>/Tm<sup>3+</sup> ions, have been synthesized by high-temperature coprecipitation method. The influence of the molar ratio of precursors and the cation composition of matrices on the sizes and morphology of particles is investigated. The method of heterogeneous crystallization of these compounds using LiYF<sub>4</sub> nanoseeds is optimized, which opens opportunities to controlled synthesis of Li<i>R</i>F<sub>4</sub> NPs with required characteristics. Among the objects studied, LiYF<sub>4</sub>@LiYbF<sub>4</sub>:Tm<sup>3+</sup>@LiYF<sub>4</sub> NPs demonstrate the most intense anti-Stokes photoluminescence in the UV (λ = 362 nm) and blue (λ = 450 nm) ranges, which exceeds the corresponding characteristics for β-NaYF<sub>4</sub>:Yb<sup>3+</sup>/Tm<sup>3+</sup>@NaYF<sub>4</sub> particles. LiYF<sub>4</sub>@LiLuF<sub>4</sub>:Yb<sup>3+</sup>/Er<sup>3+</sup>@LiYF<sub>4</sub> NPs are the most efficient IR converters in the (λ = 1530 nm) among the investigated isostructural matrices; their spectral-luminescence characteristics are close to those of the β-NaYF<sub>4</sub>:Yb<sup>3+</sup>/Er<sup>3+</sup>@NaYF<sub>4</sub> compound with the equivalent degree of codoping. The results obtained give possibilities to consider LiYF<sub>4</sub>@LiYbF<sub>4</sub>:Tm<sup>3+</sup>@LiYF<sub>4</sub> and LiYF<sub>4</sub>@LiLuF<sub>4</sub>:Yb<sup>3+</sup>/Er<sup>3+</sup>@LiYF<sub>4</sub> NPs as a real alternative to the most widely used phosphors based on hexa-gonal β-NaYF<sub>4</sub> host for photonics and biotechnology applications.</p>","PeriodicalId":527,"journal":{"name":"Crystallography Reports","volume":"69 2","pages":"239 - 247"},"PeriodicalIF":0.6,"publicationDate":"2024-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141523045","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
Ab Initio Molecular Dynamics Simulation of the Superionic State in Pb0.78Sr0.19K0.03F1.97 Solid Solution: Behavioral Features of the Fluorine Ion Sublattice Pb0.78Sr0.19K0.03F1.97 固溶体中超离子态的 Ab Initio 分子动力学模拟：氟离子子晶格的行为特征
IF 0.6 4区 材料科学
Crystallography Reports Pub Date : 2024-06-06 DOI: 10.1134/S1063774524600145
A. V. Petrov, Q. Ji, I. V. Murin, A. K. Ivanov-Schitz
{"title":"Ab Initio Molecular Dynamics Simulation of the Superionic State in Pb0.78Sr0.19K0.03F1.97 Solid Solution: Behavioral Features of the Fluorine Ion Sublattice","authors":"A. V. Petrov,&nbsp;Q. Ji,&nbsp;I. V. Murin,&nbsp;A. K. Ivanov-Schitz","doi":"10.1134/S1063774524600145","DOIUrl":"10.1134/S1063774524600145","url":null,"abstract":"<p>The structural and transport features of the behavior of the fluorine ion sublattice of Pb<sub>0.78</sub>Sr<sub>0.19</sub>K<sub>0.03</sub>F<sub>1.97</sub> solid solution have been studied by the ab initio molecular dynamics method. It is shown that the local diffusion of fluorine anions changes with the nature of dopant atom, which is consistent with the experimental transport characteristics.</p>","PeriodicalId":527,"journal":{"name":"Crystallography Reports","volume":"69 2","pages":"220 - 225"},"PeriodicalIF":0.6,"publicationDate":"2024-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141523085","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
Electrically Induced Photonic Structures in Cholesteric and Nematic Liquid Crystals 胆甾型和向列型液晶中的电诱导光子结构
IF 0.6 4区 材料科学
Crystallography Reports Pub Date : 2024-06-06 DOI: 10.1134/S1063774524600157
S. P. Palto, A. R. Geivandov, I. V. Kasyanova, D. O. Rybakov, I. V. Simdyankin, B. A. Umanskii, N. M. Shtykov
{"title":"Electrically Induced Photonic Structures in Cholesteric and Nematic Liquid Crystals","authors":"S. P. Palto,&nbsp;A. R. Geivandov,&nbsp;I. V. Kasyanova,&nbsp;D. O. Rybakov,&nbsp;I. V. Simdyankin,&nbsp;B. A. Umanskii,&nbsp;N. M. Shtykov","doi":"10.1134/S1063774524600157","DOIUrl":"10.1134/S1063774524600157","url":null,"abstract":"<p>The latest studies of electrically induced photonic liquid crystal structures, performed at the Laboratory of Liquid Crystals of the Shubnikov Institute of Crystallography of the Russian Academy of Sciences, are reviewed. Due to the field-induced spatial modulation of the refractive index, these structure exhibit optical properties that are characteristic of photonic crystals. Two types of structures are discussed. The first is induced in cholesteric liquid crystals with spontaneous formation of a helical director distribution. The orientational transition to the state with a lying helix (i.e., axis lying in the layer plane) is considered. The second type includes homogeneous layers of nonchiral nematic liquid crystals, in which refractive index modulation is due to the effect of flexoelectric instability. In both cases the periodic boundary conditions for the molecular orientation are of fundamental importance. Both the methods for setting boundary conditions and the photonic properties of structures are considered.</p>","PeriodicalId":527,"journal":{"name":"Crystallography Reports","volume":"69 2","pages":"139 - 150"},"PeriodicalIF":0.6,"publicationDate":"2024-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141548333","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
Subnanosecond X-ray Diffraction Technique for the Study of Photoinduced Polarization-Dependent Processes on the KISI-Kurchatov 利用亚纳秒 X 射线衍射技术研究 KISI-Kurchatov 上的光诱导偏振相关过程
IF 0.6 4区 材料科学
Crystallography Reports Pub Date : 2024-06-06 DOI: 10.1134/S1063774524600170
M. V. Kovalchuk, E. I. Mareev, A. G. Kulikov, F. S. Pilyak, N. N. Obydennov, F. V. Potemkin, Yu. V. Pisarevsky, N. V. Marchenkov, A. E. Blagov
{"title":"Subnanosecond X-ray Diffraction Technique for the Study of Photoinduced Polarization-Dependent Processes on the KISI-Kurchatov","authors":"M. V. Kovalchuk,&nbsp;E. I. Mareev,&nbsp;A. G. Kulikov,&nbsp;F. S. Pilyak,&nbsp;N. N. Obydennov,&nbsp;F. V. Potemkin,&nbsp;Yu. V. Pisarevsky,&nbsp;N. V. Marchenkov,&nbsp;A. E. Blagov","doi":"10.1134/S1063774524600170","DOIUrl":"10.1134/S1063774524600170","url":null,"abstract":"<p>The dynamics of the parameters of the diffraction peak 0012 of LiNbO<sub>3</sub>:Fe crystals was recorded with a time resolution of less than 1 ns using synchronization of nanosecond laser pulses with synchrotron bunches of the KISI-Kurchatov source. The impact of a laser pulse (λ = 532 nm, τ = 4 ns, energy density 0.6 J/cm<sup>2</sup>) at different polarization directions of laser radiation causes a change in the peak intensity; this change depends on the angle between the laser beam polarization direction and the crystallographic axes. The obtained results are supplemented with the wavelet analysis of experimental data. The observed polarization dependence correlates with the data in the literature on the photovoltaic effect.</p>","PeriodicalId":527,"journal":{"name":"Crystallography Reports","volume":"69 2","pages":"165 - 172"},"PeriodicalIF":0.6,"publicationDate":"2024-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141548335","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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