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

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Dynamics of the Rise of an Air Bubble in a Magnetic Fluid Shell inside a Magnetic Field 磁场内磁性流体壳中气泡的上升动力学
IF 0.48
Bulletin of the Russian Academy of Sciences: Physics Pub Date : 2024-10-29 DOI: 10.1134/S1062873824707955
A. Ya. Simonovsky, A. R. Zakinyan
{"title":"Dynamics of the Rise of an Air Bubble in a Magnetic Fluid Shell inside a Magnetic Field","authors":"A. Ya. Simonovsky,&nbsp;A. R. Zakinyan","doi":"10.1134/S1062873824707955","DOIUrl":"10.1134/S1062873824707955","url":null,"abstract":"<p>The rise of an air bubble enclosed in a magnetic fluid shell inside an external homogeneous magnetic field directed horizontally is investigated experimentally. It is shown that the magnetic field acting on the magnetic fluid shell alters the shape of the bubble, which is reflected in the quantitative characteristics of rising. Oscillations in the shape of the air bubble are observed as it rises. Results demonstrate the possibility of controlling small volumes of gas that can have practical applications.</p>","PeriodicalId":504,"journal":{"name":"Bulletin of the Russian Academy of Sciences: Physics","volume":"88 10","pages":"1630 - 1635"},"PeriodicalIF":0.48,"publicationDate":"2024-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142540518","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
Texturing of the Easy Axes of Magnetic Nanoparticles during Freezing of a Magnetic Suspension in the Presence of an External Field 磁性悬浮液在外部磁场作用下冻结过程中磁性纳米粒子易轴的纹理变化
IF 0.48
Bulletin of the Russian Academy of Sciences: Physics Pub Date : 2024-10-29 DOI: 10.1134/S1062873824707864
A. O. Ivanov, A. Yu. Solovyova, I. M. Subbotin, E. A. Elfimova
{"title":"Texturing of the Easy Axes of Magnetic Nanoparticles during Freezing of a Magnetic Suspension in the Presence of an External Field","authors":"A. O. Ivanov,&nbsp;A. Yu. Solovyova,&nbsp;I. M. Subbotin,&nbsp;E. A. Elfimova","doi":"10.1134/S1062873824707864","DOIUrl":"10.1134/S1062873824707864","url":null,"abstract":"<p>Solidification of a magnetic suspension in the presence of a magnetic field can produce a ferrocomposite characterized by an orientation texture along the easy magnetization axes of nanoparticles. The characteristics of this texture were calculated taking into account the interparticle magnetic–dipole interaction within the framework of a modified mean field theory. Theoretical predictions were confirmed by Monte Carlo computer simulation data.</p>","PeriodicalId":504,"journal":{"name":"Bulletin of the Russian Academy of Sciences: Physics","volume":"88 10","pages":"1567 - 1572"},"PeriodicalIF":0.48,"publicationDate":"2024-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142540748","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
Shape of the Surface of a Magnetic Fluid near Magnetic Bodies in a Constant and Alternating Magnetic Field 恒定和交变磁场中磁性体附近磁性流体表面的形状
IF 0.48
Bulletin of the Russian Academy of Sciences: Physics Pub Date : 2024-10-29 DOI: 10.1134/S1062873824707943
A. Ya. Simonovsky, A. R. Zakinyan
{"title":"Shape of the Surface of a Magnetic Fluid near Magnetic Bodies in a Constant and Alternating Magnetic Field","authors":"A. Ya. Simonovsky,&nbsp;A. R. Zakinyan","doi":"10.1134/S1062873824707943","DOIUrl":"10.1134/S1062873824707943","url":null,"abstract":"<p>The shape the free surface of a magnetic fluid takes in an external homogeneous magnetic field near solid magnetic bodies is investigated experimentally. The shape of the surface of a magnetic fluid in the vicinity of bodies of different basic geometry (cylinder, ball, and plate) is studied. The pattern of the magnetic fluid surface under the influence of a stationary and alternating magnetic field is considered. It is shown that the shape of the surface depends strongly on the volume of the magnetic fluid, the geometry of the magnetic body, and the magnitude of the magnetic field. Results testify to the possibility of controlling the shape of the free surface of a magnetic fluid, which could find practical application.</p>","PeriodicalId":504,"journal":{"name":"Bulletin of the Russian Academy of Sciences: Physics","volume":"88 10","pages":"1623 - 1629"},"PeriodicalIF":0.48,"publicationDate":"2024-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142540794","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
Motion of a Thin Layer of a Magnetic Fluid near a Magnetizable Body in a Uniform Magnetic Field 均匀磁场中可磁化体附近磁性流体薄层的运动
IF 0.48
Bulletin of the Russian Academy of Sciences: Physics Pub Date : 2024-10-29 DOI: 10.1134/S1062873824708006
O. A. Sharova, D. A. Pelevina, V. A. Naletova
{"title":"Motion of a Thin Layer of a Magnetic Fluid near a Magnetizable Body in a Uniform Magnetic Field","authors":"O. A. Sharova,&nbsp;D. A. Pelevina,&nbsp;V. A. Naletova","doi":"10.1134/S1062873824708006","DOIUrl":"10.1134/S1062873824708006","url":null,"abstract":"<p>Theoretical and experimental studies were made of the flow of a thin layer of a magnetic fluid along a horizontal plane near an immobile magnetizable cylindrical body in an applied uniform vertical magnetic field. The shapes of the surface of the magnetic fluid at different times were constructed. The influence of the applied field on the flow of the layer was investigated.</p>","PeriodicalId":504,"journal":{"name":"Bulletin of the Russian Academy of Sciences: Physics","volume":"88 10","pages":"1642 - 1647"},"PeriodicalIF":0.48,"publicationDate":"2024-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142540793","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
Influence of Gyromagnetic Effects on Magnetization of Magnetic Fluids 回磁效应对磁性流体磁化的影响
IF 0.48
Bulletin of the Russian Academy of Sciences: Physics Pub Date : 2024-10-29 DOI: 10.1134/S1062873824707992
A. N. Tyatyushkin
{"title":"Influence of Gyromagnetic Effects on Magnetization of Magnetic Fluids","authors":"A. N. Tyatyushkin","doi":"10.1134/S1062873824707992","DOIUrl":"10.1134/S1062873824707992","url":null,"abstract":"<p>The influence of gyromagnetic effects on magnetization of a magnetic fluid modeled as a suspension of spherical rigidly magnetized particles in a uniform magnetic field was theoretically investigated. An expression for the magnetization of the suspension was obtained. The parameter that determines the influence of the gyromagnetic effects was estimated.</p>","PeriodicalId":504,"journal":{"name":"Bulletin of the Russian Academy of Sciences: Physics","volume":"88 10","pages":"1530 - 1534"},"PeriodicalIF":0.48,"publicationDate":"2024-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142540763","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
Dynamics of Floating Droplets of a Magnetic Liquid in Glycerol in a Flat Channel under the Influence of a Magnetic Field 磁场影响下扁平通道中甘油中磁性液体的浮动液滴动力学
IF 0.48
Bulletin of the Russian Academy of Sciences: Physics Pub Date : 2024-10-29 DOI: 10.1134/S1062873824707967
E. A. Sokolov, D. A. Kalyuzhnaya, A. A. Pribylov, R. E. Politov, P. A. Ryapolov
{"title":"Dynamics of Floating Droplets of a Magnetic Liquid in Glycerol in a Flat Channel under the Influence of a Magnetic Field","authors":"E. A. Sokolov,&nbsp;D. A. Kalyuzhnaya,&nbsp;A. A. Pribylov,&nbsp;R. E. Politov,&nbsp;P. A. Ryapolov","doi":"10.1134/S1062873824707967","DOIUrl":"10.1134/S1062873824707967","url":null,"abstract":"<p>Results are presented from studying the effect the magnitude of a magnetic field and the concentration of the magnetic phase of a magnetic fluid (MF) have on the coefficient of elongation and the shape of a drop of the MF floating in glycerol. Dependences are obtained for the MF droplet’s coefficient of elongation on the parameters of the magnetic fluids that are used and the strength of the magnetic field.</p>","PeriodicalId":504,"journal":{"name":"Bulletin of the Russian Academy of Sciences: Physics","volume":"88 10","pages":"1636 - 1641"},"PeriodicalIF":0.48,"publicationDate":"2024-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142540519","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 Vibrational Spectroscopy and Ab Initio Calculations to Study Hydrogen-Bonded Complexes in Aqueous Solutions of Acetylacetone 利用振动光谱和 Ab Initio 计算研究乙酰丙酮水溶液中的氢键配合物
IF 0.48
Bulletin of the Russian Academy of Sciences: Physics Pub Date : 2024-10-29 DOI: 10.1134/S106287382470802X
A. A. Jumabaev, H. A. Hushvaktov, A. A. Absanov, B. B. Khudaykulov, U. A. Holikulov, A. M. Norkulov
{"title":"Using Vibrational Spectroscopy and Ab Initio Calculations to Study Hydrogen-Bonded Complexes in Aqueous Solutions of Acetylacetone","authors":"A. A. Jumabaev,&nbsp;H. A. Hushvaktov,&nbsp;A. A. Absanov,&nbsp;B. B. Khudaykulov,&nbsp;U. A. Holikulov,&nbsp;A. M. Norkulov","doi":"10.1134/S106287382470802X","DOIUrl":"10.1134/S106287382470802X","url":null,"abstract":"<p>The authors study Raman scattering and FTIR absorption spectra of pure acetylacetone and aqueous solutions of it at room temperature and atmospheric pressure. Results from experiments and calculations show that a red shift of the C=O stretching vibrational band and a blue shift of the C–H stretching vibrational band are observed when the amount of acetylacetone in a solution is reduced. The distribution of potential energy is analyzed for the monomeric molecule of the keto form of acetylacetone. The calculated and observed frequencies of vibration are in good agreement. It is shown that acetylacetone creates molecular clusters with water molecules in the form of C=O…H and C–H…O hydrogen bonds, altering the shape of the spectral bands.</p>","PeriodicalId":504,"journal":{"name":"Bulletin of the Russian Academy of Sciences: Physics","volume":"88 10","pages":"1660 - 1667"},"PeriodicalIF":0.48,"publicationDate":"2024-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142540584","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
Magnetization of Small Multi-Core Particles: Theory and Computer Modeling 多核小粒子的磁化：理论与计算机建模
IF 0.48
Bulletin of the Russian Academy of Sciences: Physics Pub Date : 2024-10-29 DOI: 10.1134/S1062873824707827
E. V. Grokhotova, A. Yu. Solovyova, E. A. Elfimova
{"title":"Magnetization of Small Multi-Core Particles: Theory and Computer Modeling","authors":"E. V. Grokhotova,&nbsp;A. Yu. Solovyova,&nbsp;E. A. Elfimova","doi":"10.1134/S1062873824707827","DOIUrl":"10.1134/S1062873824707827","url":null,"abstract":"<p>The authors study the orientational texturing of the magnetic moments of four magnetic nanoparticles fixed in the vertices of a regular tetrahedron and forming a separate multi-core particle. Monte Carlo calculations are used to obtain numerically the probability density of magnetic moment orientation, static magnetization, and the initial magnetic susceptibility of a multi-core particle.</p>","PeriodicalId":504,"journal":{"name":"Bulletin of the Russian Academy of Sciences: Physics","volume":"88 10","pages":"1561 - 1566"},"PeriodicalIF":0.48,"publicationDate":"2024-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142540747","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
Numerical Calculation of Electric Field Enhancement in Neutron Traps with Rough Walls Coated with Superfluid Helium 带超流体氦涂层粗糙壁的中子捕获器中的电场增强数值计算
IF 0.48
Bulletin of the Russian Academy of Sciences: Physics Pub Date : 2024-10-14 DOI: 10.1134/S1062873824707712
V. D. Kochev, T. I. Mogilyuk, S. S. Kostenko, P. D. Grigoriev
{"title":"Numerical Calculation of Electric Field Enhancement in Neutron Traps with Rough Walls Coated with Superfluid Helium","authors":"V. D. Kochev,&nbsp;T. I. Mogilyuk,&nbsp;S. S. Kostenko,&nbsp;P. D. Grigoriev","doi":"10.1134/S1062873824707712","DOIUrl":"10.1134/S1062873824707712","url":null,"abstract":"<p>A film of liquid helium on the surface of material traps for ultracold neutrons protects the neutrons from being absorbed by the trap walls. By using surface roughness and an electrostatic field, it is possible to maintain a helium film of sufficient thickness throughout the height of the trap. The field distribution near the tip of such wall roughness of the trap was calculated, and the effect of this field on holding the helium film was estimated.</p>","PeriodicalId":504,"journal":{"name":"Bulletin of the Russian Academy of Sciences: Physics","volume":"88 9","pages":"1472 - 1477"},"PeriodicalIF":0.48,"publicationDate":"2024-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142434874","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
Studying the Effect of the Period of Mechanical Activation on the Formation of Ni3Al-Based High-Legered Alloys Obtained via Spark Plasma Sintering 研究机械活化期对通过火花等离子烧结获得的 Ni3Al 基高阶合金形成的影响
IF 0.48
Bulletin of the Russian Academy of Sciences: Physics Pub Date : 2024-10-14 DOI: 10.1134/S1062873824707700
L. I. Shevtsova, M. A. Esikov, A. I. Gavrilov, E. A. Lojkina, D. E. Shevtsov, Ya. A. Merzlikina
{"title":"Studying the Effect of the Period of Mechanical Activation on the Formation of Ni3Al-Based High-Legered Alloys Obtained via Spark Plasma Sintering","authors":"L. I. Shevtsova,&nbsp;M. A. Esikov,&nbsp;A. I. Gavrilov,&nbsp;E. A. Lojkina,&nbsp;D. E. Shevtsov,&nbsp;Ya. A. Merzlikina","doi":"10.1134/S1062873824707700","DOIUrl":"10.1134/S1062873824707700","url":null,"abstract":"<p>The authors study compacted materials obtained using different periods of the mechanical activation of mixtures whose compositions correspond to alloys of grades VKNA-1V and VKNA-4U, with subsequent electric spark sintering. The maximum strengths of the compacted materials are reached after 3.5 min of mechanical activation: 1200 MPa for VKNA-1V and 1100 MPa for VKNA-4U.</p>","PeriodicalId":504,"journal":{"name":"Bulletin of the Russian Academy of Sciences: Physics","volume":"88 9","pages":"1465 - 1471"},"PeriodicalIF":0.48,"publicationDate":"2024-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142434876","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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