{"title":"Crystal Structure Analysis of Epitaxial Nanoheterostructures with Multiple Pseudomorphic Quantum Wells {InхGa(_{{{mathbf{1}}-x}})As/GaAs} on GaAs (100), (110), and (111)А Substrates","authors":"E. A. Klimov, A. N. Klochkov, S. S. Pushkarev","doi":"10.1134/S1063774524602764","DOIUrl":"10.1134/S1063774524602764","url":null,"abstract":"<p>The crystal structures of the epitaxial multilayer films {In<sub>0.1</sub>Ga<sub>0.9</sub>As/GaAs} × 10 and {In<sub>0.2</sub>Ga<sub>0.8</sub>As/GaAs} × 10 grown on GaAs substrates with different orientations, (100), (110), and (111)<i>А</i>, were studied in order to elucidate specific features, which can be related to the previously found efficiency of the terahertz emission generation in films with (110) and (111)<i>А</i> orientations. Significant concentrations of twins and stacking faults were found on non-standard GaAs (110) and (111)<i>А</i> substrates. The composition and thickness of individual layers of heterostructures on GaAs (100) substrates were refined based on the analysis of interference oscillations in X-ray diffraction curves.</p>","PeriodicalId":527,"journal":{"name":"Crystallography Reports","volume":"70 1","pages":"122 - 128"},"PeriodicalIF":0.6,"publicationDate":"2025-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143908675","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}
{"title":"Atomistic Simulation of Paratellurite α-TeO2 Crystal. III: Anisotropy of Ion Transport under External DC Electrical Field","authors":"A. K. Ivanov-Schitz","doi":"10.1134/S1063774524602661","DOIUrl":"10.1134/S1063774524602661","url":null,"abstract":"<p>The specific features of the ion transport in paratellurite α-TeO<sub>2</sub> crystals under an external dc electric field have been investigated by the molecular dynamics method. It is shown that the ion transport anisotropy is more pronounced when the field <i>E</i> is directed along the <i>c</i> axis: at <i>E</i> = 350 kV/mm the diffusion is enhanced by a factor of about 2 in crystals with oxygen vacancies and by a factor of 3 in samples with additional oxygen interstitials.</p>","PeriodicalId":527,"journal":{"name":"Crystallography Reports","volume":"70 1","pages":"64 - 67"},"PeriodicalIF":0.6,"publicationDate":"2025-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143908831","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}
E. K. Stolyarova, T. F. Mukhina, A. M. Ismagulov, P. A. Volkov, A. G. Kulikov, E. Yu. Tereschenko, E. B. Yatsishina
{"title":"Chemical Composition of Polychrome Enamels of Three Ancient Russian Bronze Items from Vladimir–Suzdal Rus’","authors":"E. K. Stolyarova, T. F. Mukhina, A. M. Ismagulov, P. A. Volkov, A. G. Kulikov, E. Yu. Tereschenko, E. B. Yatsishina","doi":"10.1134/S1063774524602533","DOIUrl":"10.1134/S1063774524602533","url":null,"abstract":"<p>The basic composition of polychrome enamels of three bronze items, found on the territory of Vladimir and Suzdal Opolye (a temporal pendant, a pendant icon, and a cross), dating from the 12th–13th centuries, has been studied by atomic emission spectroscopy and energy-dispersive X-ray microanalysis. The items have a rich color, which made it possible to investigate the technological features of a wide range of colored enamels: white, black, gray, light gray, deep blue, red-brown, brown, green, blue-green, turquoise, and yellow. The obtained results suggest the Byzantine origin of the enamels and local production of the items themselves.</p>","PeriodicalId":527,"journal":{"name":"Crystallography Reports","volume":"70 1","pages":"129 - 150"},"PeriodicalIF":0.6,"publicationDate":"2025-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143908722","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}
T. G. Golovina, A. F. Konstantinova, E. V. Zabelina, N. S. Kozlova, V. M. Kasimova
{"title":"Allowance for the Imperfection of the Spectrophotometric Complex Optical Elements When Measuring Transmission Spectra of Gyrotropic Uniaxial Crystals. II: Samples Are Cut Parallel to the Optical Axis","authors":"T. G. Golovina, A. F. Konstantinova, E. V. Zabelina, N. S. Kozlova, V. M. Kasimova","doi":"10.1134/S1063774524602739","DOIUrl":"10.1134/S1063774524602739","url":null,"abstract":"<p>The effect of the imperfections of the polarizer, analyzer, and photomultiplier tube (PMT) on the results of measuring the spectral transmission dependences for langasite family crystals cut <i>parallel</i> to the optical axis has been theoretically and experimentally investigated. It is shown that, in the absence of analyzer, oscillations arise on the transmission spectra, whose amplitude depends on the crystal rotation. These oscillations are associated with linear birefringence and occur because of the imperfection of the PMT, which plays the role of a partial analyzer. The PMT parameters in dependence of wavelength are calculated from the obtained spectra. The birefringence of the studied crystals was calculated, and the error of this calculation was estimated. It is shown that the imperfection of optical elements does not lead to any additional errors in the calculation of the birefringence. Thus, when the plate is cut perpendicular (parallel) to the optical axis, circular (linear) birefringence manifests itself.</p>","PeriodicalId":527,"journal":{"name":"Crystallography Reports","volume":"70 1","pages":"50 - 57"},"PeriodicalIF":0.6,"publicationDate":"2025-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143908724","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}
B. E. Vintaikin, Ya. V. Cherenkov, A. E. Smirnov, S. G. Vasiliev
{"title":"Investigation of the Inhomogeneous Deformations of Crystal Lattices during Deformational Cutting of 08Kh18N10T Steel Samples with a Periodic Surface Relief","authors":"B. E. Vintaikin, Ya. V. Cherenkov, A. E. Smirnov, S. G. Vasiliev","doi":"10.1134/S1063774524602715","DOIUrl":"10.1134/S1063774524602715","url":null,"abstract":"<p>A technique for forming true distributions of X-ray diffraction intensity using X-ray diffractometry has been developed to reveal inhomogeneous deformations of a curvilinear surface with a periodic relief by separating the effects related to the influence of this surface on the diffraction profile shape. True intensity distribution profiles, related to only inhomogeneous surface deformations and sizes of crystalline blocks, were obtained; the parameters and specific features of the distribution functions of these deformations were determined. The proposed approach makes it possible to select, in particular, the contribution from only a curvilinear surface with a regular sample relief to the shape of the intensity distribution profile.</p>","PeriodicalId":527,"journal":{"name":"Crystallography Reports","volume":"70 1","pages":"83 - 89"},"PeriodicalIF":0.6,"publicationDate":"2025-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143908823","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}
I. I. Buchinskaya, M. V. Koldaeva, N. I. Sorokin, A. G. Kulikov, D. N. Karimov
{"title":"Study of Pb0.5Cd0.25Lu0.25F2.25 Fluorite Solid Solution with Congruent Melting Nature","authors":"I. I. Buchinskaya, M. V. Koldaeva, N. I. Sorokin, A. G. Kulikov, D. N. Karimov","doi":"10.1134/S1063774524602120","DOIUrl":"10.1134/S1063774524602120","url":null,"abstract":"<p>The optical, mechanical, and conductive properties of the Pb<sub>0.5</sub>Cd<sub>0.25</sub>Lu<sub>0.25</sub>F<sub>2.25</sub> crystal host have been studied for the first time in comparison with the crystals of the initial single-component fluorides. The short-wavelength transparency cut-off of the three-component mixed crystal is determined by the presence of PbF<sub>2</sub> in its composition; the IR limit is naturally shifted to 15 µm due to the presence of LuF<sub>3</sub> in the composition. The refractive index of the studied solid solution, <i>n</i> = 1.6889 at the wavelength λ = 0.6328 µm, is lower than that of the PbF<sub>2</sub> crystal due to the introduction of less polarizable components CdF<sub>2</sub> and LuF<sub>3</sub>. Significant hardening is observed for the three-component crystal: the microhardness <i>H</i><sub>V</sub> = 2.5 GPa, which exceeds the hardness values for PbF<sub>2</sub> and CdF<sub>2</sub> by almost 40%. The electrical conductivity σ<sub>dc</sub> of Pb<sub>0.5</sub>Cd<sub>0.25</sub>Lu<sub>0.25</sub>F<sub>2.25</sub> at 500 K is 5.5 × 10<sup>−5</sup> S/cm, which corresponds to the conductivity level of solid solutions <i>M</i><span>(_{{1 - x}})</span>Lu<sub><i>x</i></sub>F<span>(_{{2 + x}})</span> (<i>M</i> = Ca, Sr, Ba). The studied multicomponent fluoride material can be a promising crystal medium for various photonic applications.</p>","PeriodicalId":527,"journal":{"name":"Crystallography Reports","volume":"70 1","pages":"68 - 76"},"PeriodicalIF":0.6,"publicationDate":"2025-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143908832","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}
{"title":"Quantum Size Effect under Normal Incidence of a Medium-Energy Electron Beam onto a Growing Heteroepitaxial Film","authors":"S. M. Shkornyakov","doi":"10.1134/S1063774524601928","DOIUrl":"10.1134/S1063774524601928","url":null,"abstract":"<p>The reflectance of medium-energy (~10 KeV) electrons at their normal incidence onto a growing single-crystal thin film has been calculated. It is shown that in this case a quantum size effect occurs, which manifests itself in harmonic oscillations of the reflected beam intensity. The oscillation amplitude and period depend on the thickness of the growing film and the energy of the incident electrons. The results obtained are graphically illustrated.</p>","PeriodicalId":527,"journal":{"name":"Crystallography Reports","volume":"70 1","pages":"90 - 95"},"PeriodicalIF":0.6,"publicationDate":"2025-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143908723","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}
{"title":"Computer Simulation of AgI|Si3O6 Complex Nanocomposites in Single-Wall Carbon Nanotubes","authors":"A. V. Petrov, I. V. Murin, A. K. Ivanov-Schitz","doi":"10.1134/S1063774524601837","DOIUrl":"10.1134/S1063774524601837","url":null,"abstract":"<p>The heteronanostructures formed upon filling single-wall (12,12) armchair nanotubes with silver iodide and silicon oxide nanoparticles have been simulated by the molecular dynamics method. The results of the computer simulation show that the formation of stable internal nanocomposites with inclusions of AgI and silicon oxide clusters of different configuration is possible in these tubes. The linear and planar Si<sub>3</sub>O<sub>6</sub> clusters differently affect the mobility of silver ions in the complicated AgI|Si<sub>3</sub>O<sub>6</sub>@SWCNT heteronanostructures under study.</p>","PeriodicalId":527,"journal":{"name":"Crystallography Reports","volume":"70 1","pages":"110 - 115"},"PeriodicalIF":0.6,"publicationDate":"2025-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143908673","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}
A. P. Tarasov, L. A. Zadorozhnaya, B. V. Nabatov, V. M. Kanevsky
{"title":"ZnO Microtubes: Formation Mechanism and Whispering Gallery Mode Lasing","authors":"A. P. Tarasov, L. A. Zadorozhnaya, B. V. Nabatov, V. M. Kanevsky","doi":"10.1134/S1063774524602685","DOIUrl":"10.1134/S1063774524602685","url":null,"abstract":"<p>The luminescent and lasing properties of ZnO microtubes synthesized by a modified thermal evaporation method have been studied by photoluminescence spectroscopy. It is shown that whispering gallery modes are responsible for lasing in the near-UV range. The possibility of achieving low lasing thresholds (down to ~8 kW/cm<sup>2</sup>) and high optical quality factors (above 3900) is demonstrated. A mechanism for forming such microcrystals is proposed, which is based on the assumption of simultaneous growth and etching along the [0001] crystallographic direction.</p>","PeriodicalId":527,"journal":{"name":"Crystallography Reports","volume":"70 1","pages":"31 - 38"},"PeriodicalIF":0.6,"publicationDate":"2025-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143908820","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}
{"title":"Atomistic Simulation of Paratellurite α-TeO2 Crystal. II: Anisotropy and Microscopic Aspects of Ion Transport","authors":"A. K. Ivanov-Schitz","doi":"10.1134/S1063774524601850","DOIUrl":"10.1134/S1063774524601850","url":null,"abstract":"<p>The specific features of the ion transport in α-TeO<sub>2</sub> paratellurite crystals have been studied by the molecular dynamics method. It is shown that the ion transport in α-TeO<sub>2</sub>, which is caused by oxygen transport, is anisotropic. The highest values of the diffusion coefficients are observed along the <i>с</i> axis: <i>D</i><sub>О</sub> ~ 1 × 10<sup>–7</sup> cm<sup>2</sup>/s at temperatures close to the melting point. It is shown that oxygen ions jump over distances of 1.5–2.5 Å via a vacancy or interstitial mechanism.</p>","PeriodicalId":527,"journal":{"name":"Crystallography Reports","volume":"70 1","pages":"58 - 63"},"PeriodicalIF":0.6,"publicationDate":"2025-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143908830","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}