Izvestiya vysshikh uchebnykh zavedenii. Fizika最新文献_第9页

Behavior of the principal components of the vertical component of the Earth's electric field strength, spectrally localized at double orbital frequencies of relativistic binary stellar systems with low eccentricity 地球电场强度的垂直分量的主成分的行为，光谱定位于低偏心相对论双星系统的双轨道频率

Izvestiya vysshikh uchebnykh zavedenii. Fizika Pub Date : 2022-01-01 DOI: 10.17223/00213411/65/3/43

L. Grunskaya, V. Isakevich, D. V. Isakevich

引用次数: 0

Structure and properties of a high-entropy alloy subjected to saturation with boron by the additive method 一种高熵合金经添加法硼饱和后的组织和性能

Izvestiya vysshikh uchebnykh zavedenii. Fizika Pub Date : 2022-01-01 DOI: 10.17223/00213411/65/11/52

Y. Ivanov, V. Shugurov, E. Petrikova, N. Prokopenko, A. Teresov, O. Tolkachev

引用次数: 0

Spatial distribution studies of activation radionuclides in graphite of uranium-graphite reactors 铀-石墨反应堆石墨中活化放射性核素的空间分布研究

Izvestiya vysshikh uchebnykh zavedenii. Fizika Pub Date : 2022-01-01 DOI: 10.17223/00213411/65/5/63

E. Zakharova, A. Volkova, R. Kan, S. Kotlyarevsky, A. Pavliuk

引用次数: 0

Study of the magnetization and curie temperature of LiZn ferrite synthesized by the electron-beam heating from mechanically activated reagents 机械活化试剂电子束加热合成LiZn铁氧体的磁化强度和居里温度研究

Izvestiya vysshikh uchebnykh zavedenii. Fizika Pub Date : 2022-01-01 DOI: 10.17223/00213411/65/11/86

E. Lysenko, V. Vlasov, A. Surzhikov, S. Ghyngazov

{"title":"Study of the magnetization and curie temperature of LiZn ferrite synthesized by the electron-beam heating from mechanically activated reagents","authors":"E. Lysenko, V. Vlasov, A. Surzhikov, S. Ghyngazov","doi":"10.17223/00213411/65/11/86","DOIUrl":"https://doi.org/10.17223/00213411/65/11/86","url":null,"abstract":"In this work, the magnetization of Li0.4Fe2.4Zn0.2O4 lithium-zinc ferrite, synthesized by electron-beam heating of a mechanically activated mixture of Fe2O3-Li2CO3-ZnO initial reagents, was studied by measuring the specific saturation magnetization and the Curie temperature. Mechanical activation of the initial reagents was carried out at different times using a planetary mill and a steel set. The grinding rotation speed was 1290 and 2220 rpm. To heat the samples during the synthesis, an ILU-6 pulsed accelerator with an electron energy of 2.4 MeV was used. The synthesis temperatures were 600 and 750 °C, the synthesis time did not exceed 120 minutes. It was established that preliminary grinding of samples at 2220 rpm followed by electron beam heating at 750 °C for 120 minutes leads to the formation of the main amount of ferrite with the desired chemical formula. This is confirmed by the data on the specific saturation magnetization of 80 emu/g and the nominal value of the Curie temperature of 500 °C. The use of this mode allows to significantly reduce the ferrite synthesis temperature in comparison with traditional ceramic technology.","PeriodicalId":14647,"journal":{"name":"Izvestiya vysshikh uchebnykh zavedenii. Fizika","volume":"22 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77648274","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

Relationship of kinetic and magnetic properties of intermetallic compounds of the Gd-In system in the paramagnetic region 顺磁区Gd-In体系金属间化合物的动力学与磁性的关系

Izvestiya vysshikh uchebnykh zavedenii. Fizika Pub Date : 2022-01-01 DOI: 10.17223/00213411/65/1/3

O.K. Kuvadikov, N.C. Hamraev, R. M. Rajabov, A. Eshkulov, I. Turdibekov

引用次数: 0

Reflection of a plasma wave from a potential barrier, the size of which is commensurate with the wavelength 等离子体波从势垒反射，其大小与波长相称

Izvestiya vysshikh uchebnykh zavedenii. Fizika Pub Date : 2022-01-01 DOI: 10.17223/00213411/65/9/131

A. Matveev

引用次数: 0

Evolution of dislocation structure in low-stability states during deformation of solid solutions of alloys 合金固溶体变形过程中低稳定态位错组织的演变

Izvestiya vysshikh uchebnykh zavedenii. Fizika Pub Date : 2022-01-01 DOI: 10.17223/00213411/65/1/103

A. Potekaev, A. Klopotov, L. Trishkina, T. Cherkasova, V. Kulagina, I. D. Tazin

{"title":"Evolution of dislocation structure in low-stability states during deformation of solid solutions of alloys","authors":"A. Potekaev, A. Klopotov, L. Trishkina, T. Cherkasova, V. Kulagina, I. D. Tazin","doi":"10.17223/00213411/65/1/103","DOIUrl":"https://doi.org/10.17223/00213411/65/1/103","url":null,"abstract":"The results of a study of the evolution of the dislocation structure of polycrystals of homogeneous solid solutions in low-stability states in Cu-Mn-based alloys with a FCC crystal lattice are presented. It is found that each stage is characterized by its own deformation carrier in the form of a certain dislocation substructure (DSS), the volume fraction of which has a maximum at this stage. At the same time, at the considered stage, the carrier of deformation of the previous stage gradually disappears as the degree of deformation (ε) increases, however, a carrier of deformation of the subsequent stage appears. In a certain range of values of ε, deformation carriers characteristic of the previous, considered and subsequent stages simultaneously coexist. It is shown that transitions from some types of DSS to other types occur in some intervals of values of the degree of deformation ε. It is discovered that each stage of deformation has its own DSS - carriers of deformation. The transition from stage to stage is accompanied by the formation of new deformation carriers, which is a characteristic feature of weakly stable states of the system. Naturally, the described picture is observed because the study is carried out at such a grain size, which suggests the possibility of implementing a low-stability structural-phase state of the alloy, since the grain size acts in this case as a kind of control parameter.","PeriodicalId":14647,"journal":{"name":"Izvestiya vysshikh uchebnykh zavedenii. Fizika","volume":"10 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85146865","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 simulation of the temperature field dynamics in single-crystalline silicon at repetitively-pulsed high-intensity ion implantation and energy impact of beam on the surface 单晶硅重复脉冲高强度离子注入温度场动力学及束流对表面能量冲击的数值模拟

Izvestiya vysshikh uchebnykh zavedenii. Fizika Pub Date : 2022-01-01 DOI: 10.17223/00213411/65/11/65

A. Ivanova, G. Bleykher, D. Vakhrushev, O. Korneva

{"title":"Numerical simulation of the temperature field dynamics in single-crystalline silicon at repetitively-pulsed high-intensity ion implantation and energy impact of beam on the surface","authors":"A. Ivanova, G. Bleykher, D. Vakhrushev, O. Korneva","doi":"10.17223/00213411/65/11/65","DOIUrl":"https://doi.org/10.17223/00213411/65/11/65","url":null,"abstract":"Methods to modify surface and near-surface layers of materials and coatings by ion beams are used in many fields of science and technology. The method of high-intensity implantation by high-power density ion beams with submillisecond duration involves significant pulsed heating of the irradiated target’s near-surface layer, followed by its rapid cooling due to heat transfer into the material due to thermal conductivity and the implementation of repetitively-pulsed radiation-enhanced diffusion of atoms to depths exceeding the projective ion range. Using the numerical simulation, this work studies the dynamics of changes in temperature fields into silicon wafer under single-pulse and repetitively-pulsed exposure to submillisecond titanium ion beam with a pulsed power density in the range up to 109 W/m2. The conditions are determined under which the temperature in the ion-doped layer will correspond to the conditions of radiation-stimulated diffusion of the implanted element, and the temperature in the matrix material will not deteriorate its microstructure and properties.","PeriodicalId":14647,"journal":{"name":"Izvestiya vysshikh uchebnykh zavedenii. Fizika","volume":"5 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86547259","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

The effect of relative humidity on the number concentration of aerosol particles in a sealed volume 相对湿度对密闭体积内气溶胶粒子数浓度的影响

Izvestiya vysshikh uchebnykh zavedenii. Fizika Pub Date : 2022-01-01 DOI: 10.17223/00213411/65/3/97

I. E. Kovbasyuk, O. Maslakov, A. M. Paramonov, E. S. Khozyasheva, M. N. Shakhov

引用次数: 0

The evanescent waves in metamaterial from the point of view of molecular optics 从分子光学的角度看超材料中的倏逝波

Izvestiya vysshikh uchebnykh zavedenii. Fizika Pub Date : 2022-01-01 DOI: 10.17223/00213411/65/3/3

B. B. Averbukh, I. B. Averbukh

引用次数: 0