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Bulletin of the Russian Academy of Sciences: Physics最新文献

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Surface Tension of a Propane–Methane Solution in the Temperature Range of 318.15–333.15 K 温度范围为 318.15-333.15 K 的丙烷-甲烷溶液的表面张力
IF 0.48
Bulletin of the Russian Academy of Sciences: Physics Pub Date : 2024-10-14 DOI: 10.1134/S1062873824707554
M. N. Khotienkova, V. N. Andbaeva
{"title":"Surface Tension of a Propane–Methane Solution in the Temperature Range of 318.15–333.15 K","authors":"M. N. Khotienkova,&nbsp;V. N. Andbaeva","doi":"10.1134/S1062873824707554","DOIUrl":"10.1134/S1062873824707554","url":null,"abstract":"<p>The capillary constant of a propane–methane solution was measured along the saturation line in the temperature range of 318.15–333.15 K at pressures from the saturation pressure of pure propane up to 4 MPa. The surface tension of the solution was determined. Equations approximating the concentration and pressure dependences of surface tension were constructed.</p>","PeriodicalId":504,"journal":{"name":"Bulletin of the Russian Academy of Sciences: Physics","volume":"88 9","pages":"1362 - 1367"},"PeriodicalIF":0.48,"publicationDate":"2024-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142434809","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}
引用次数: 0
Structure and Lattice Dynamics of Rare-Earth Zirconates R2Zr2O7 (R = La–Lu): Ab Initio Calculation 稀土锆酸盐 R2Zr2O7（R = La-Lu）的结构和晶格动力学：Ab Initio 计算
IF 0.48
Bulletin of the Russian Academy of Sciences: Physics Pub Date : 2024-10-14 DOI: 10.1134/S1062873824707542
V. A. Chernyshev, K. I. Glukhov, P. A. Zayats
{"title":"Structure and Lattice Dynamics of Rare-Earth Zirconates R2Zr2O7 (R = La–Lu): Ab Initio Calculation","authors":"V. A. Chernyshev,&nbsp;K. I. Glukhov,&nbsp;P. A. Zayats","doi":"10.1134/S1062873824707542","DOIUrl":"10.1134/S1062873824707542","url":null,"abstract":"<p>R<sub>2</sub>Zr<sub>2</sub>O<sub>7</sub> (R = La–Lu) crystals were studied by DFT/GCA calculations. The phonon frequencies at the Γ point were found. The components of the elastic tensor for the entire R<sub>2</sub>Zr<sub>2</sub>O<sub>7</sub> (R = La–Lu) crystal series and their hardness were calculated. The change in the phonon frequencies upon hydrostatic compression was described.</p>","PeriodicalId":504,"journal":{"name":"Bulletin of the Russian Academy of Sciences: Physics","volume":"88 9","pages":"1353 - 1361"},"PeriodicalIF":0.48,"publicationDate":"2024-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142434810","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}
引用次数: 0
Using Evolutionary Algorithms and Ab Initio Calculations to Study the Crystal Structure of Intercalated Fe1/3TiS2 Compound 利用进化算法和 Ab Initio 计算研究夹杂 Fe1/3TiS2 化合物的晶体结构
IF 0.48
Bulletin of the Russian Academy of Sciences: Physics Pub Date : 2024-10-14 DOI: 10.1134/S1062873824707633
A. A. Chubarova, M. V. Mamonova
{"title":"Using Evolutionary Algorithms and Ab Initio Calculations to Study the Crystal Structure of Intercalated Fe1/3TiS2 Compound","authors":"A. A. Chubarova,&nbsp;M. V. Mamonova","doi":"10.1134/S1062873824707633","DOIUrl":"10.1134/S1062873824707633","url":null,"abstract":"<p>Ab initio calculations of the crystal structure and magnetic properties of intercalated Fe<sub>0.33</sub>TiS<sub>2</sub> compound are made using evolutionary machine learning algorithms. Spin‒orbit interaction is considered, and the band structure and density of states are calculated.</p>","PeriodicalId":504,"journal":{"name":"Bulletin of the Russian Academy of Sciences: Physics","volume":"88 9","pages":"1415 - 1422"},"PeriodicalIF":0.48,"publicationDate":"2024-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142434864","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}
引用次数: 0
Algorithm for Finding Parameters of Equations of State by Particle Swarm Optimization 用粒子群优化法查找状态方程参数的算法
IF 0.48
Bulletin of the Russian Academy of Sciences: Physics Pub Date : 2024-10-14 DOI: 10.1134/S1062873824707670
K. A. Boyarskikh, K. V. Khishchenko
{"title":"Algorithm for Finding Parameters of Equations of State by Particle Swarm Optimization","authors":"K. A. Boyarskikh,&nbsp;K. V. Khishchenko","doi":"10.1134/S1062873824707670","DOIUrl":"10.1134/S1062873824707670","url":null,"abstract":"<p>An algorithm for finding the parameters of equations of state is described. The proposed algorithm is based on the particle swarm optimization method, which is applied to three simple models based on the van der Waals equation (in the form of the dependence of pressure on specific volume and temperature) and two of its modifications.</p>","PeriodicalId":504,"journal":{"name":"Bulletin of the Russian Academy of Sciences: Physics","volume":"88 9","pages":"1446 - 1451"},"PeriodicalIF":0.48,"publicationDate":"2024-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142434873","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}
引用次数: 0
Effect of Annealing on the Lateral Homogeneity of Ti/InAlAs Schottky Barriers 退火对 Ti/InAlAs 肖特基势垒横向均匀性的影响
IF 0.48
Bulletin of the Russian Academy of Sciences: Physics Pub Date : 2024-10-14 DOI: 10.1134/S1062873824707736
I. Yu. Genze, M. S. Aksenov, D. V. Dmitriev
{"title":"Effect of Annealing on the Lateral Homogeneity of Ti/InAlAs Schottky Barriers","authors":"I. Yu. Genze,&nbsp;M. S. Aksenov,&nbsp;D. V. Dmitriev","doi":"10.1134/S1062873824707736","DOIUrl":"10.1134/S1062873824707736","url":null,"abstract":"<p>The authors study the effect the temperature (300–450°C) and period (0–20 min) of annealing have on the parameters (barrier height and ideality factor) and homogeneity of Au/Pt/Ti/i(<i>n</i>)‒In<sub>0.52</sub>Al<sub>0.48</sub>As(001) Schottky barriers. The homogeneity of the Schottky barriers is determined by analyzing the temperature dependences of their parameters in the range of 80–350 K and the Richardson plots in the Tung model.</p>","PeriodicalId":504,"journal":{"name":"Bulletin of the Russian Academy of Sciences: Physics","volume":"88 9","pages":"1485 - 1489"},"PeriodicalIF":0.48,"publicationDate":"2024-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142434805","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}
引用次数: 0
Effect of Magnetic Field and Temperature on the Magnetic Structure of a Two-Dimensional Magnet on a Substrate 磁场和温度对基底上二维磁体磁结构的影响
IF 0.48
Bulletin of the Russian Academy of Sciences: Physics Pub Date : 2024-10-14 DOI: 10.1134/S1062873824707578
I. V. Maltsev, I. A. Kuznetsov, I. V. Bychkov
{"title":"Effect of Magnetic Field and Temperature on the Magnetic Structure of a Two-Dimensional Magnet on a Substrate","authors":"I. V. Maltsev,&nbsp;I. A. Kuznetsov,&nbsp;I. V. Bychkov","doi":"10.1134/S1062873824707578","DOIUrl":"10.1134/S1062873824707578","url":null,"abstract":"<p>The effect of temperature, external magnetic field, and non-magnetic substrate on a two-dimensional magnet with a skyrmion structure was studied by Monte Carlo simulation. The skyrmion structure was ensured by the presence of the Dzyaloshinskii–Moriya interaction and anisotropy in the energy of the system. The effect of the substrate was described by the Frenkel–Kontorova potential.</p>","PeriodicalId":504,"journal":{"name":"Bulletin of the Russian Academy of Sciences: Physics","volume":"88 9","pages":"1376 - 1381"},"PeriodicalIF":0.48,"publicationDate":"2024-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142434811","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}
引用次数: 0
Using Extreme Physical Impacts to Study Properties of Hard Seeds of Legume Plants 利用极端物理冲击研究豆科植物硬种子的特性
IF 0.48
Bulletin of the Russian Academy of Sciences: Physics Pub Date : 2024-10-14 DOI: 10.1134/S1062873824707645
A. Yu. Belyaev, N. A. Kruglikov, I. V. Kochev, D. A. Krylova
{"title":"Using Extreme Physical Impacts to Study Properties of Hard Seeds of Legume Plants","authors":"A. Yu. Belyaev,&nbsp;N. A. Kruglikov,&nbsp;I. V. Kochev,&nbsp;D. A. Krylova","doi":"10.1134/S1062873824707645","DOIUrl":"10.1134/S1062873824707645","url":null,"abstract":"<p>Different physical impacts are used to overcome the hard-seededness of legumes. The germination of yellow melilot and meadow clover seeds is shown to grow after cryotreatment. In licorice and astragalus, germination increases only after treating their seeds with hydrostatic pressure. It is assumed that liquid oxygen stimulates the development of yellow melilot seedlings. The origin of licorice seeds is found to affect their deformation: resistance to deformation (hardening) is determined by the seed coat (in arid areas) or by cotyledons (if excess moisture).</p>","PeriodicalId":504,"journal":{"name":"Bulletin of the Russian Academy of Sciences: Physics","volume":"88 9","pages":"1423 - 1430"},"PeriodicalIF":0.48,"publicationDate":"2024-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142434871","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}
引用次数: 0
Solitons in a Semi-Infinite Ferromagnet with the Easy-Plane Anisotropy 具有易平面各向异性的半无限铁磁体中的孤子
IF 0.48
Bulletin of the Russian Academy of Sciences: Physics Pub Date : 2024-10-14 DOI: 10.1134/S106287382470758X
V. V. Kiselev, A. A. Raskovalov
{"title":"Solitons in a Semi-Infinite Ferromagnet with the Easy-Plane Anisotropy","authors":"V. V. Kiselev,&nbsp;A. A. Raskovalov","doi":"10.1134/S106287382470758X","DOIUrl":"10.1134/S106287382470758X","url":null,"abstract":"<p>The Landau–Lifshitz model for a semi-infinite ferromagnet with the easy-plane anisotropy was considered. New analytical solutions to this model were found, which describe the interaction of solitons with the boundary of the ferromagnet. Additional conservation laws were obtained, which guarantee the stability of the solitons under their collision with the boundary of the sample. The changes of parameters of the solitons after the collision were calculated.</p>","PeriodicalId":504,"journal":{"name":"Bulletin of the Russian Academy of Sciences: Physics","volume":"88 9","pages":"1382 - 1387"},"PeriodicalIF":0.48,"publicationDate":"2024-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142434796","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}
引用次数: 0
Effect of Structural Differences between Dimethylamine-Substituted Styrene Dyes of the Pyridine and Quinoline Series on Their Second- and Third-Order Nonlinearity in Microcrystalline Powders 吡啶和喹啉系列二甲基胺取代苯乙烯染料的结构差异对微晶粉末中二阶和三阶非线性的影响
IF 0.48
Bulletin of the Russian Academy of Sciences: Physics Pub Date : 2024-10-14 DOI: 10.1134/S1062873824707748
E. S. Medyantsev, N. A. Lobova, A. V. Koshkin, A. A. Ivanov
{"title":"Effect of Structural Differences between Dimethylamine-Substituted Styrene Dyes of the Pyridine and Quinoline Series on Their Second- and Third-Order Nonlinearity in Microcrystalline Powders","authors":"E. S. Medyantsev,&nbsp;N. A. Lobova,&nbsp;A. V. Koshkin,&nbsp;A. A. Ivanov","doi":"10.1134/S1062873824707748","DOIUrl":"10.1134/S1062873824707748","url":null,"abstract":"<p>The authors study the spectral behavior of D–π–A type styryl dye of the quinoline series in solvents of different natures. Pronounced solvatochromism and sensitivity to the medium’s viscosity are discovered. Microcrystalline dye powder is studied using chromium-forsterite laser radiation with a wavelength of 1250 nm. The observed differences in second-order nonlinearity correlate with structural differences in analogous compounds, and with factors of organizing the supramolecular system in the crystal.</p>","PeriodicalId":504,"journal":{"name":"Bulletin of the Russian Academy of Sciences: Physics","volume":"88 9","pages":"1490 - 1495"},"PeriodicalIF":0.48,"publicationDate":"2024-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142434803","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}
引用次数: 0
Method of Determining the Relationship between Grain Structure and Relative Energies of Grain Boundaries 确定晶粒结构与晶界相对能量之间关系的方法
IF 0.48
Bulletin of the Russian Academy of Sciences: Physics Pub Date : 2024-10-14 DOI: 10.1134/S1062873824707669
N. S. Chikunova, A. V. Stolbovsky, I. V. Blinov
{"title":"Method of Determining the Relationship between Grain Structure and Relative Energies of Grain Boundaries","authors":"N. S. Chikunova,&nbsp;A. V. Stolbovsky,&nbsp;I. V. Blinov","doi":"10.1134/S1062873824707669","DOIUrl":"10.1134/S1062873824707669","url":null,"abstract":"<p>An algorithmic approach for determining the relationship between the energy of grain boundaries and their location in the structure has been developed and proposed. A comparative analysis of the results of relative grain boundary energies measurements by the method of etch groove shape analysis for “manual” measurement and the developed algorithmic approach was carried out on the example of ultrafine-grained nickel obtained by severe plastic deformation.</p>","PeriodicalId":504,"journal":{"name":"Bulletin of the Russian Academy of Sciences: Physics","volume":"88 9","pages":"1440 - 1445"},"PeriodicalIF":0.48,"publicationDate":"2024-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142434870","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}
引用次数: 0
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