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

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Temperature Dependences of Magnetization and Hysteresis Loops of Composite Films (CoFeB + SiO2) with Different Compositions and Structure 不同成分和结构CoFeB + SiO2复合膜磁化和磁滞回线的温度依赖性
IF 0.48
Bulletin of the Russian Academy of Sciences: Physics Pub Date : 2025-05-26 DOI: 10.1134/S1062873825710736
L. N. Kotov, A. A. Utkin, I. V. Semyashkin, Yu. E. Kalinin, A. V. Sitnikov
{"title":"Temperature Dependences of Magnetization and Hysteresis Loops of Composite Films (CoFeB + SiO2) with Different Compositions and Structure","authors":"L. N. Kotov,&nbsp;A. A. Utkin,&nbsp;I. V. Semyashkin,&nbsp;Yu. E. Kalinin,&nbsp;A. V. Sitnikov","doi":"10.1134/S1062873825710736","DOIUrl":"10.1134/S1062873825710736","url":null,"abstract":"<p>Temperature dependences of magnetization of composite films (CoFeB + SiO<sub>2</sub>) with different concentrations of metal alloy <i>x</i> = 45–85 at % with different micro- and nanostructure at temperatures of 2–400 K in magnetic fields of 5 mT and 5 T were obtained. Hysteresis loops of magnetization of films with different <i>x</i> in magnetic fields up to 5 T at temperatures of 2, 100, 300, and 400 K were obtained. It was shown that films with granular structure were characterized by a wider hysteresis loop and had a stronger dependence of magnetization on temperature compared to films with granular-percolation structure and films with a structure in the form of a metal matrix with dielectric inclusions.</p>","PeriodicalId":504,"journal":{"name":"Bulletin of the Russian Academy of Sciences: Physics","volume":"89 4","pages":"516 - 521"},"PeriodicalIF":0.48,"publicationDate":"2025-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144140216","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
Study of Magneto-Optical Properties of Aromatic Liquids and Their Application in Signal Processing 芳香液体的磁光性质及其在信号处理中的应用研究
IF 0.48
Bulletin of the Russian Academy of Sciences: Physics Pub Date : 2025-05-26 DOI: 10.1134/S1062873825710724
Sh. V. Egamov, A. M. Khidirov, Kh. B. Mirzokulov, B. N. Rakhimov
{"title":"Study of Magneto-Optical Properties of Aromatic Liquids and Their Application in Signal Processing","authors":"Sh. V. Egamov,&nbsp;A. M. Khidirov,&nbsp;Kh. B. Mirzokulov,&nbsp;B. N. Rakhimov","doi":"10.1134/S1062873825710724","DOIUrl":"10.1134/S1062873825710724","url":null,"abstract":"<p>Experimental Faraday rotation spectra in the range of 1.8–3.65 eV were recorded for H<sub>2</sub>O, CCl<sub>4</sub>, dimethylaniline, benzene, nitrobenzene, <i>o</i>-toluidine, <i>o</i>-anisidine, <i>m</i>-chloroaniline, and <i>o</i>-chloroaniline. Semiempirical quantum mechanical self-consistent field (SCF) calculations using the MNDO/D method for organic molecules were chosen to evaluate electronic spectra in the visible range for interpretation of experimental results. It was shown that the magneto-optical response of samples not only varies depending on the geometry of the distribution of π electrons in aromatic liquids, but also significantly depends on their chemical composition.</p>","PeriodicalId":504,"journal":{"name":"Bulletin of the Russian Academy of Sciences: Physics","volume":"89 4","pages":"511 - 515"},"PeriodicalIF":0.48,"publicationDate":"2025-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144140217","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
Adequacy Criteria for the Non-Radiative Limit in Numerical Studies of Rarefied Plasma 稀薄等离子体数值研究中非辐射极限的充分性标准
IF 0.48
Bulletin of the Russian Academy of Sciences: Physics Pub Date : 2025-05-26 DOI: 10.1134/S1062873825710864
L. V. Borodachev
{"title":"Adequacy Criteria for the Non-Radiative Limit in Numerical Studies of Rarefied Plasma","authors":"L. V. Borodachev","doi":"10.1134/S1062873825710864","DOIUrl":"10.1134/S1062873825710864","url":null,"abstract":"<p>Characteristic features of the Darwin (non-radiative) description of electromagnetic fields are considered. Criteria for the physical adequacy of the considered formalism are obtained using a self-consistent approach to representing non-linear processes in rarefied plasma. Use of the proposed adequacy estimates of non-radiative approximation is demonstrated based on a numerical analysis of the Weibel instability.</p>","PeriodicalId":504,"journal":{"name":"Bulletin of the Russian Academy of Sciences: Physics","volume":"89 4","pages":"595 - 598"},"PeriodicalIF":0.48,"publicationDate":"2025-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144140183","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
Optical Properties of Magnetoplasmonic Microdiscs 磁等离子体微盘的光学特性
IF 0.48
Bulletin of the Russian Academy of Sciences: Physics Pub Date : 2025-05-26 DOI: 10.1134/S1062873825710797
A. A. Anikin, A. V. Motorzhina, V. K. Belyaev, V. V. Rodionova, L. V. Panina
{"title":"Optical Properties of Magnetoplasmonic Microdiscs","authors":"A. A. Anikin,&nbsp;A. V. Motorzhina,&nbsp;V. K. Belyaev,&nbsp;V. V. Rodionova,&nbsp;L. V. Panina","doi":"10.1134/S1062873825710797","DOIUrl":"10.1134/S1062873825710797","url":null,"abstract":"<p>In this paper, the electrical polarizability, absorbance spectra and photothermal properties of Au/Fe/Au and Fe/Au/Fe layered microdisks synthesized by lift-off optical lithography are investigated. An analytical method is proposed to determine the electrical polarizability in the quasi-static approximation. Theoretical and experimental results are in agreement in the visible and near-infrared spectral range. The results obtained provide an assessment of the applicability of such microdisks for combined photothermal and magnetomechanical anticancer therapy.</p>","PeriodicalId":504,"journal":{"name":"Bulletin of the Russian Academy of Sciences: Physics","volume":"89 4","pages":"550 - 555"},"PeriodicalIF":0.48,"publicationDate":"2025-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144140207","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
Arion Radiation during Wave Propagation in the Galactic Magnetic Field 星系磁场中波传播过程中的离子辐射
IF 0.48
Bulletin of the Russian Academy of Sciences: Physics Pub Date : 2025-05-26 DOI: 10.1134/S1062873825710931
A. Bedda, V. Denisov, I. Denisova, O. Gavrish
{"title":"Arion Radiation during Wave Propagation in the Galactic Magnetic Field","authors":"A. Bedda,&nbsp;V. Denisov,&nbsp;I. Denisova,&nbsp;O. Gavrish","doi":"10.1134/S1062873825710931","DOIUrl":"10.1134/S1062873825710931","url":null,"abstract":"<p>The problem of wave physics is considered, describing processes occurring on a galactic scale; it is shown that it is necessary to take into account the influence of various disturbing factors on the process under study and, above all, the presence of interstellar gas in galaxies. It is shown that because of this, when electromagnetic waves propagate in interstellar space over galactic distances, not only their energy dissipates, but also a slight change in the speed of their propagation occurs. These influences significantly change the processes of generation of arions by electromagnetic waves, leading to obtaining physically based results.</p>","PeriodicalId":504,"journal":{"name":"Bulletin of the Russian Academy of Sciences: Physics","volume":"89 4","pages":"633 - 638"},"PeriodicalIF":0.48,"publicationDate":"2025-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144140212","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
Propagation of Spin Waves in Nanoscale Coupled Ferrite Films 自旋波在纳米级耦合铁氧体薄膜中的传播
IF 0.48
Bulletin of the Russian Academy of Sciences: Physics Pub Date : 2025-05-26 DOI: 10.1134/S106287382571092X
V. V. Balaeva, D. V. Romanenko, M. A. Morozova
{"title":"Propagation of Spin Waves in Nanoscale Coupled Ferrite Films","authors":"V. V. Balaeva,&nbsp;D. V. Romanenko,&nbsp;M. A. Morozova","doi":"10.1134/S106287382571092X","DOIUrl":"10.1134/S106287382571092X","url":null,"abstract":"<p>The propagation of spin waves in two nanoscale laterally coupled ferrite films was studied by micromagnetic simulation methods. The features of the power transfer of surface and backward volume magnetostatic waves were investigated. The effect of the distance between the films and the width of the films on the power transfer length and cutoff frequency of these types of waves was evaluated.</p>","PeriodicalId":504,"journal":{"name":"Bulletin of the Russian Academy of Sciences: Physics","volume":"89 4","pages":"626 - 632"},"PeriodicalIF":0.48,"publicationDate":"2025-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144140214","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 under Load on the Magneto-Optical Properties of Iron-Based Nanocrystalline Ribbons 负载退火对铁基纳米晶带磁光性能的影响
IF 0.48
Bulletin of the Russian Academy of Sciences: Physics Pub Date : 2025-05-26 DOI: 10.1134/S1062873825710943
A. M. Kharlamova, P. Y. Kozhevnikova, T. P. Kaminskaya, G. V. Kurlyandskaya, E. E. Shalygina
{"title":"Effect of Annealing under Load on the Magneto-Optical Properties of Iron-Based Nanocrystalline Ribbons","authors":"A. M. Kharlamova,&nbsp;P. Y. Kozhevnikova,&nbsp;T. P. Kaminskaya,&nbsp;G. V. Kurlyandskaya,&nbsp;E. E. Shalygina","doi":"10.1134/S1062873825710943","DOIUrl":"10.1134/S1062873825710943","url":null,"abstract":"<p>The effect of annealing under load on the magneto-optical properties of magnetically soft nanocrystalline Fe<sub>68.5</sub>Cr<sub>5</sub>Si<sub>13.5</sub>B<sub>9</sub>Nb<sub>3</sub>Cu<sub>1</sub> ribbons obtained by rapid quenching from the melt and then annealed at a temperature of 520°C for 2 h with no load and under a specific load of 150 MPa is studied. The surface magnetic hysteresis loops with a simultaneous visualization of changes in magnetic domain structure have been studied using a magneto-optical Kerr magnetometer. The obtained experimental data indicate the fact that annealing under load leads to the formation of induced magnetic anisotropy and affects the samples in the magnetic field.</p>","PeriodicalId":504,"journal":{"name":"Bulletin of the Russian Academy of Sciences: Physics","volume":"89 4","pages":"580 - 585"},"PeriodicalIF":0.48,"publicationDate":"2025-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144140205","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 Magnetic Properties of the Medium-Entropy GdTbDyY Alloy 中熵GdTbDyY合金的结构和磁性能
IF 0.48
Bulletin of the Russian Academy of Sciences: Physics Pub Date : 2025-05-26 DOI: 10.1134/S1062873825710785
N. Yu. Pankratov, I. S. Tereshina, P. V. Krot, V. N. Verbetskiy, S. A. Nikitin
{"title":"Structure and Magnetic Properties of the Medium-Entropy GdTbDyY Alloy","authors":"N. Yu. Pankratov,&nbsp;I. S. Tereshina,&nbsp;P. V. Krot,&nbsp;V. N. Verbetskiy,&nbsp;S. A. Nikitin","doi":"10.1134/S1062873825710785","DOIUrl":"10.1134/S1062873825710785","url":null,"abstract":"<p>A multicomponent rare-earth alloy GdTbDyY with a single-phase hexagonal close-packed crystal structure was synthesized. It was found that this alloy exhibits two magnetic phase transitions at temperatures of 140 and 201 K. Within the temperature range that encompasses both transitions, there was a noticeable magnetocaloric effect. It was determined that the magnetic properties of the GdTbDyY alloy are mainly contributed by trivalent terbium and dysprosium ions: there is a correlation between structural and magnetic parameters.</p>","PeriodicalId":504,"journal":{"name":"Bulletin of the Russian Academy of Sciences: Physics","volume":"89 4","pages":"545 - 549"},"PeriodicalIF":0.48,"publicationDate":"2025-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144140208","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
Longitudinal Magnetoresistance of Ta/FeMn/Ta, Ta/Dy/Ta, and Ta/CoFe/Ta Nanostructures Caused by Spin Hall Effect 自旋霍尔效应对Ta/FeMn/Ta、Ta/Dy/Ta和Ta/CoFe/Ta纳米结构纵向磁阻的影响
IF 0.48
Bulletin of the Russian Academy of Sciences: Physics Pub Date : 2025-05-26 DOI: 10.1134/S1062873825710694
R. S. Zavornitsyn, L. I. Naumova, M. A. Milyaev, I. K. Maksimova, V. V. Proglyado, V. V. Ustinov
{"title":"Longitudinal Magnetoresistance of Ta/FeMn/Ta, Ta/Dy/Ta, and Ta/CoFe/Ta Nanostructures Caused by Spin Hall Effect","authors":"R. S. Zavornitsyn,&nbsp;L. I. Naumova,&nbsp;M. A. Milyaev,&nbsp;I. K. Maksimova,&nbsp;V. V. Proglyado,&nbsp;V. V. Ustinov","doi":"10.1134/S1062873825710694","DOIUrl":"10.1134/S1062873825710694","url":null,"abstract":"<p>For Ta/Fe<sub>50</sub>Mn<sub>50</sub>/Ta, Ta/Dy/Ta, and Ta/Co<sub>90</sub>Fe<sub>10</sub>/Ta nanostructures prepared by means of magnetron sputtering, a positive longitudinal magnetoresistance caused by the spin Hall effect has been found. The difference in the magnitude of magnetoresistance and the shape of magnetoresistive curves obtained for nanostructures with layers of metals with different types of magnetic ordering is interpreted under the assumption of different magnitude of purely spin current injected into the magnetics layer.</p>","PeriodicalId":504,"journal":{"name":"Bulletin of the Russian Academy of Sciences: Physics","volume":"89 4","pages":"492 - 499"},"PeriodicalIF":0.48,"publicationDate":"2025-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144140218","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
Micromagnetic Modeling of Hysteresis Characteristics of Suevites from the Zhamanshin Impact Crater 扎曼心陨石坑苏伟陨石磁滞特性的微磁模拟
IF 0.48
Bulletin of the Russian Academy of Sciences: Physics Pub Date : 2025-05-26 DOI: 10.1134/S1062873825710682
P. V. Kharitonskii, E. A. Setrov, A. Yu. Ralin, E. S. Sergienko, K. G. Gareev
{"title":"Micromagnetic Modeling of Hysteresis Characteristics of Suevites from the Zhamanshin Impact Crater","authors":"P. V. Kharitonskii,&nbsp;E. A. Setrov,&nbsp;A. Yu. Ralin,&nbsp;E. S. Sergienko,&nbsp;K. G. Gareev","doi":"10.1134/S1062873825710682","DOIUrl":"10.1134/S1062873825710682","url":null,"abstract":"<p>Consistent theoretical modeling with two independent models that take into account the possible chemical inhomogeneity of particles and magnetostatic interaction between them are used to calculate hysteresis characteristics of suevites from the Zhamanshin impact crater that correspond to experimental data, and estimate the concentrations of ferrimagnetic particles in the samples.</p>","PeriodicalId":504,"journal":{"name":"Bulletin of the Russian Academy of Sciences: Physics","volume":"89 4","pages":"487 - 491"},"PeriodicalIF":0.48,"publicationDate":"2025-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144140134","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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