Journal of Surface Investigation: X-ray, Synchrotron and Neutron Techniques最新文献

{"title":"Designs of the Neutron Reflectometers SONATA and HARMONY for the Reactor PIK","authors":"E. Yu. Taracheva,&nbsp;V. A. Matveev,&nbsp;N. K. Pleshanov,&nbsp;V. G. Syromyatnikov,&nbsp;V. V. Tarnavich,&nbsp;V. A. Ulyanov","doi":"10.1134/S1027451026701168","DOIUrl":"10.1134/S1027451026701168","url":null,"abstract":"<p>The designs and concepts of the new neutron reflectometers SONATA and HARMONY, which form part of the instrument suite of the high-flux PIK reactor (Gatchina, Russia), are presented. The reflectometers will be installed in the neutron guide hall on channels transporting neutrons from the CNS. The high-flux reflectometer SONATA is designed for studies of solid-state samples with vertical surfaces, whereas the HARMONY liquid reflectometer is designed for studies of liquid samples with horizontal surfaces. The design features of the reflectometers that enable operation with monochromatic and white beams and with unpolarized and polarized neutrons are considered. Their concepts provide for selection of the instrument resolution, wavelength in monochromatic-beam modes, and wavelength range in white-beam modes. Optimal conditions for measurements with monochromatic and white beams are discussed.</p>","PeriodicalId":671,"journal":{"name":"Journal of Surface Investigation: X-ray, Synchrotron and Neutron Techniques","volume":"20 3","pages":"624 - 634"},"PeriodicalIF":0.4,"publicationDate":"2026-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149189707","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Model of a Spherical Potential Barrier with Refraction in the Problem of Sputtering the Au(001) Surface","authors":"A. I. Musin,&nbsp;V. N. Samoilov,&nbsp;P. V. Aristarkhov,&nbsp;E. E. Karpova","doi":"10.1134/S1027451026701004","DOIUrl":"10.1134/S1027451026701004","url":null,"abstract":"<p>The transformation Jacobian for the distribution function of sputtered atoms crossing a spherical potential barrier with refraction is analyzed analytically in the approximation of small polar angles close to the surface normal. For such a potential barrier, a molecular dynamics model is used to analyze the effect of its curvature γ on the angular distribution of sputtered atoms from an Au(001) single crystal. The model accounts for repulsion from the nearest surface atoms and then applies the exact formula for refraction at the potential barrier. As the curvature of the potential barrier decreases, the direction toward the Wehner spot shifts away from the surface normal. The experimental data correspond to an almost planar potential barrier with γ ≤ 0.2.</p>","PeriodicalId":671,"journal":{"name":"Journal of Surface Investigation: X-ray, Synchrotron and Neutron Techniques","volume":"20 3","pages":"525 - 531"},"PeriodicalIF":0.4,"publicationDate":"2026-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149189627","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Adsorption Properties of Langmuir–Blodgett and Magnetron Boron Nitride Nanofilms on Polyamide Fabrics","authors":"I. V. Loktionova,&nbsp;P. V. Abakumov,&nbsp;A. P. Kuzmenko,&nbsp;A. I. Kolpakov,&nbsp;V. A. Mamontov,&nbsp;E. A. Novikov,&nbsp;L. P. Petrova,&nbsp;M. A. Pugachevskii","doi":"10.1134/S1027451026701144","DOIUrl":"10.1134/S1027451026701144","url":null,"abstract":"<p>The relevance of this work lies in addressing the critical need for advanced functional materials for adsorption-based purification that satisfy modern requirements of efficiency, stability, and selectivity under increasing anthropogenic pressure on ecosystems. Boron nitride (BN) has emerged as a highly promising candidate owing to its exceptional thermal stability and chemical inertness. However, the integration of BN nanostructures onto flexible substrates remains a major scientific challenge. In this study, Langmuir–Blodgett and magnetron-sputtered BN nanofilms were fabricated on polyamide fabrics and characterized using SEM-EDS, Raman spectroscopy, XRD, and spectrophotometry. The analysis showed that the Langmuir–Blodgett method produces ordered layered <i>h</i>-BN structures, whereas magnetron sputtering results in heterophase systems (<i>h</i>-BN, <i>c</i>-BN, β-B). Spectrophotometric studies of composite film materials (CFMs) obtained from stearic-acid-stabilized <i>h</i>-BN nanoparticles revealed a 7.6% greater reduction in the concentration of model colloidal Fe(OH)₃ compared with pristine PA-6. Quantum-chemical calculations confirmed enhanced adsorption energy: <i>E</i>_ads = –1.86 eV for functionalized <i>h</i>-BN CFMs versus –0.85 eV for unmodified PA-6. These findings demonstrate the potential of the developed CFMs as next-generation filtration materials with superior performance, laying the groundwork for engineering tailored nanofilms for environmental remediation and advanced separation technologies—particularly in water treatment and pollution control, where conventional materials approach their operational limits. Overall, this study provides important insights into structure-property relationships in nanofilm-based filtration systems and highlights sustainable materials-science-driven solutions for addressing contemporary environmental challenges.</p>","PeriodicalId":671,"journal":{"name":"Journal of Surface Investigation: X-ray, Synchrotron and Neutron Techniques","volume":"20 3","pages":"610 - 617"},"PeriodicalIF":0.4,"publicationDate":"2026-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149189891","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Wetting of Surface and Grain Boundaries in Tungsten with Melted Nickel","authors":"B. B. Straumal,&nbsp;V. M. Kiiko,&nbsp;V. G. Sursaeva","doi":"10.1134/S1027451026701156","DOIUrl":"10.1134/S1027451026701156","url":null,"abstract":"<p>The paper describes the wetting of polycrystalline and bicrystalline tungsten samples. A process flow chart is described for wetting solid tungsten with molten nickel in a vacuum at temperatures between 1550 and 1800°C. The structure of the samples was studied using scanning electron microscopes equipped with energy-dispersive spectrometers, which allowed the identification of chemical elements. The formation of chemical compounds Ni₄W and NiW₂ and nickel-tungsten solid solutions in regions along the initial nickel-tungsten interfaces was established. Decreasing values of the contact angles of wetting tungsten with nickel from ~15° to 4° with increasing temperature in the specified temperature range were observed. Penetration of molten nickel was detected along the interface between single crystals in the tungsten bicrystal, the content of which decreased from the surface of the sample in a quadratic dependence. The nature of the interaction of polycrystalline and bicrystal tungsten with molten nickel is practically identical. The obtained results can be used in the development of composite materials and alloys, including pseudoalloys, in determining the area of their use, as well as in optimizing the processes of soldering and obtaining nickel-containing coatings on refractory metals.</p>","PeriodicalId":671,"journal":{"name":"Journal of Surface Investigation: X-ray, Synchrotron and Neutron Techniques","volume":"20 3","pages":"618 - 623"},"PeriodicalIF":0.4,"publicationDate":"2026-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149189949","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Low-Temperature Properties of Strontium Iridate Films and Heterostructures Based on Them","authors":"G. D. Ulev,&nbsp;K. Y. Constantinian,&nbsp;I. E. Moscal’,&nbsp;K. E. Nagornykh,&nbsp;A. M. Petrzhik,&nbsp;G. A. Ovsyannikov,&nbsp;A. V. Mashirov,&nbsp;D. D. Kuznetsov","doi":"10.1134/S1027451026701260","DOIUrl":"10.1134/S1027451026701260","url":null,"abstract":"<p>The results of X-ray diffraction analysis and transmission electron microscopy of thin strontium iridate SrIrO₃ films, an important feature of which is their strong spin–orbit interaction, are presented. SrIrO₃/La_2/3Sr_1/3MnO₃ heterostructures are analyzed, in which the SrIrO₃ films are grown on an epitaxially grown manganite La_2/3Sr_1/3MnO₃ film. The spin Hall effect and inverse spin Hall effect occur simultaneously in such a heterostructure comprising ferromagnetic manganite and strontium iridate. Previous estimates of the spin Hall angle θ_SH, which characterizes the efficiency of conversion of a pure spin current into an electric current, were much higher for the all-oxide heterostructure than the θ_SH values for structures with polycrystalline metal films, such as Pt. The electrophysical characteristics of the films and heterostructure were measured over a wide temperature range from room temperature to <i>T</i> = 2 K and in magnetic fields up to <i>B</i> = 7 T. The resistive characteristics and Hall effect are discussed for SrIrO₃ films grown on SrTiO₃ and NdGaO₃ substrates and for the SrIrO₃/La_2/3Sr_1/3MnO₃ heterostructure. The effect of the strong spin–orbit interaction in SrIrO₃ films on the temperature dependence of the change in conductivity induced by a magnetic field of <i>B</i> = 1 T is discussed in the temperature range <i>T</i> = 2–20 K, where the effect of weak antilocalization becomes apparent.</p>","PeriodicalId":671,"journal":{"name":"Journal of Surface Investigation: X-ray, Synchrotron and Neutron Techniques","volume":"20 3","pages":"704 - 710"},"PeriodicalIF":0.4,"publicationDate":"2026-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149189960","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Sputtering of Ultrafine-Grained Iron with Argon Ions with Energies from Units to Tens of keV","authors":"N. N. Andrianova,&nbsp;A. M. Borisov,&nbsp;R. R. Mulyukov,&nbsp;M. A. Ovchinnikov,&nbsp;R. Kh. Khisamov","doi":"10.1134/S1027451026701211","DOIUrl":"10.1134/S1027451026701211","url":null,"abstract":"<p>The surface erosion of the ARMCO technical iron under argon ions irradiation with an energy of 30 keV and polyenergetic argon ions beam with an energy of several keV has been experimentally studied. Scanning electron microscopy was used to compare the surface morphology after high-fluence 10¹⁸‒10¹⁹ ion/cm² irradiation of iron samples with ultrafine- and coarse-grained structures with an average grain size of 300 nm and 40 µm, respectively. A significant effect of the grain size on the ion-induced morphology of the iron surface, depending on the ion energy, was found. The sputtering yields of the samples were measured based on the weight loss and irradiation fluence. The obtained data are discussed within the framework of models of physical sputtering of rough surfaces.</p>","PeriodicalId":671,"journal":{"name":"Journal of Surface Investigation: X-ray, Synchrotron and Neutron Techniques","volume":"20 3","pages":"665 - 672"},"PeriodicalIF":0.4,"publicationDate":"2026-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149189619","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Molecular Dynamics Simulation of Segregation in Ternary Pt–Pd–Cu Nanoalloys Using Alternative Force Fields","authors":"N. Y. Sdobnyakov,&nbsp;V. M. Samsonov,&nbsp;A. Yu. Kolosov,&nbsp;D. N. Sokolov,&nbsp;D. V. Zhigunov,&nbsp;N. I. Nepsha,&nbsp;E. S. Mitinev,&nbsp;I. P. Sinitsa","doi":"10.1134/S1027451026701259","DOIUrl":"10.1134/S1027451026701259","url":null,"abstract":"<p>Isothermal molecular dynamics and two alternative force fields, the tight-binding potential and the embedded-atom method, were used to simulate the uniform heating of ternary Pt₁₇₀₀Pd₁₇₀₀Cu₅₁₀₀ nanoparticles to melting, followed by cooling (quenching) of the nanodroplets to a final temperature of 300 K. This particle composition was selected in accordance with a strategy for designing ternary nanocatalysts with low fractions of noble-metal atoms and, consequently, a high content of a less expensive component. In addition to direct observation of the evolution of nanoparticle configurations during heating and cooling, the temperature dependences of the potential (cohesive) contribution to the specific internal energy and the radial density distributions of the components (Pt, Pd, and Cu) were analyzed. The local structure of the nanoparticles was also examined using OVITO software. The results show that Pd undergoes surface segregation during nanoparticle heating. At the same time, Pt atoms also remain at the nanoparticle surface, i.e., in the outermost and second monolayers, both before nanoparticle melting and after nanodroplet solidification. In general, the results obtained using the tight-binding potential and the embedded-atom method are in close agreement. The main differences concern not chemical segregation, i.e., spatial separation of the components, but structural segregation, which corresponds to the division of a nanoparticle into regions with specific local crystal structures. The tight-binding potential predicts the formation of band-shaped fcc grains separated by hcp boundaries in the solidified nanoparticles, whereas the embedded-atom method additionally predicts an approximately icosahedral morphology with fivefold symmetry axes.</p>","PeriodicalId":671,"journal":{"name":"Journal of Surface Investigation: X-ray, Synchrotron and Neutron Techniques","volume":"20 3","pages":"693 - 703"},"PeriodicalIF":0.4,"publicationDate":"2026-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149189890","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Investigation of the Influence of Dopants on the Morphology and Optical and Photocatalytic Properties of ZnO:Fe(Bi) Films","authors":"N. D. Yakushova,&nbsp;A. A. Karmanov,&nbsp;I. A. Gubich,&nbsp;S. E. Igoshina,&nbsp;I. A. Pronin","doi":"10.1134/S1027451026701090","DOIUrl":"10.1134/S1027451026701090","url":null,"abstract":"<p>Iron- and bismuth-doped zinc oxide films were synthesized using sol–gel technology. Scanning electron microscopy studies showed that all samples exhibit a hierarchical structure formed by intertwining branches of varying sizes, which depends on the dopant type. FTIR data demonstrated the incorporation of iron and bismuth into the ZnO crystal lattice. The effect of dopants on the optical properties and band gap of the material was studied, and its significant decrease with the introduction of 3 at % Fe and 3 at % Bi was shown. Investigation of the photocatalytic activity of the films revealed the role of dopants in the decomposition of model organic pollutants. It was found that photocatalytic degradation of brilliant green proceeds faster than that of methyl orange and is selective with respect to the composition of ZnO:Fe(Bi) films, while for a mixture of dyes a significant increase in the photocatalytic degradation rate constants was demonstrated.</p>","PeriodicalId":671,"journal":{"name":"Journal of Surface Investigation: X-ray, Synchrotron and Neutron Techniques","volume":"20 3","pages":"576 - 585"},"PeriodicalIF":0.4,"publicationDate":"2026-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149189993","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Zn-Containing Nanoclusters Formation in PECVD-Produced Silicon Oxide Films","authors":"V. V. Privezentsev,&nbsp;A. A. Firsov,&nbsp;V. S. Kulikauskas,&nbsp;A. N. Tereshchenko,&nbsp;A. V. Goryachev,&nbsp;M. V. Polyakov,&nbsp;L. S. Volkova","doi":"10.1134/S1027451026701272","DOIUrl":"10.1134/S1027451026701272","url":null,"abstract":"<p>This paper presents the results of a study of silicon oxide films doped with Zn ions and annealed in oxygen at temperatures from 400 up to 800°C with a step of 100°C. SiO₂ films 130 nm thick were deposited on standard silicon wafers with a diameter of 76 mm using plasma-enhanced chemical vapor deposition (PECVD). These films were implanted with ⁶⁴Zn⁺ ions at a dose of 7 × 10¹⁶ cm^‒2 and energy of 50 keV at room temperature, with the wafer overheating not exceeding 50°C. It was found that after implantation, the concentration distribution of the implanted zinc has a maximum of approximately 40 nm and zinc is present both in the metallic phase and in the oxidized state. After annealing at 700°C, all zinc is oxidized and the zinc distribution maximum shifts deeper into the film by 60 nm. After implantation, nanoclusters (NCs) with a core/shell structure of Zn(002)/β-Zn₂SiO₄(<span>(0bar {3}1)</span>) and Zn_1.9SiO₄(232) phases are formed in the SiO₂ film. After annealing at 700°C, NCs belonging to the zinc silicate phase β-Zn₂SiO₄(<span>(0bar {3}1)</span>) are detected (see above).</p>","PeriodicalId":671,"journal":{"name":"Journal of Surface Investigation: X-ray, Synchrotron and Neutron Techniques","volume":"20 3","pages":"711 - 717"},"PeriodicalIF":0.4,"publicationDate":"2026-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149189617","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Magnetic Properties of Fe/Pt and Fe/NiО/Pt Heterostructures Synthesized by Pulsed Laser Deposition","authors":"D. S. Gusev,&nbsp;A. I. Dmitriev,&nbsp;M. S. Dmitrieva,&nbsp;L. S. Parshina,&nbsp;I. N. Nikolaeva,&nbsp;O. A. Novodvorsky,&nbsp;A. P. Shkurinov","doi":"10.1134/S1027451026701193","DOIUrl":"10.1134/S1027451026701193","url":null,"abstract":"<p>An anomalous positive exchange bias in Fe/NiO/Pt thin-film structures was studied. It was shown that the magnitude and sign of the effect critically depend on the sample growth temperature, which determines the quality of the interface and the strength of the exchange interaction. Using two structures grown at room temperature and 370°C, it was demonstrated that a weak exchange interaction combined with a strong cooling field leads to a change in the sign of the bias from negative to positive.</p>","PeriodicalId":671,"journal":{"name":"Journal of Surface Investigation: X-ray, Synchrotron and Neutron Techniques","volume":"20 3","pages":"655 - 659"},"PeriodicalIF":0.4,"publicationDate":"2026-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149189961","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}