Математика и физика. Mathematics & Physics. 2017 10 (2)

 

Ресурсы коллекции

  • Magnetic Properties and Structural Changes in Co₅₀Pt₅₀ and Co₅₀Pt₅₀₋ₓPdₓ Solid Solutions Films 

    Artemyev, Evgeniy M.; Yakimov, Lev E.; Артемьев, Евгений М.; Якимов, Лев Е. (Сибирский федеральный университет. Siberian Federal University, 2017-05)
    We studied the thin films of Co₅₀Pt₅₀ and Co₅₀Pt₅₀₋ₓPdₓ with thicknesses between 20 and 1000°A. Thinner films after annealing showed formation of tetragonal ordered crystallites in their fcc lattice, which are oriented ...

  • Fractal Boundaries of Vortex Pinning Clusters in Copper-oxide Superconductors in Magnetic Field 

    Vasyutin, Mikhael A.; Kuzmichev, Nikolay D.; Shilkin, Dmitri A.; Васютин, Михаил А.; Кузьмичев, Николай Д.; Шилкин, Дмитрий А. (Сибирский федеральный университет. Siberian Federal University, 2017-05)
    The influence of fractal boundaries of a normal phase clusters on the flux creep in the copper-oxide high- temperature superconductors YBCO was investigated. A model of the magnetic-field dependence of the voltage due ...

  • Bilayer Magnetic Structures with Dipolar Interaction in Magnetic Field 

    Soldusova, Anna P.; Prudnikov, Pavel V.; Солдусова, Анна П.; Прудников, Павел В. (Сибирский федеральный университет. Siberian Federal University, 2017-05)
    Monte Carlo simulation was conducted for bilayer magnetic structures with dipolar interlayer interaction in an external magnetic field. Specific hysteresis loops were obtained for the system. Non-equilibrium relaxation ...

  • Day Plots of Bacterial Magnetite from Sediments of Shira Lake (Khakassia, Russia) 

    Semenov, Sergey V.; Balaev, Dmitry A.; Shaykhutdinov, Kirill A.; Rogozin, Denis Yu.; Семёнов, Сергей В.; Балаев, Дмитрий А.; Шайхутдинов, Кирилл А.:; Рогозин, Денис Ю. (Сибирский федеральный университет. Siberian Federal University, 2017-05)
    The domain state of magnetite detected in sediments of Shira lake (Khakassia, Russia) was examined by means of magnetic hysteresis. Analysis of experimental data obtained on samples from different parts of bottom sediment ...

  • Spectra of Effective Permeability and Losses of Magnetic Composite Films 

    Kotov, Leonid N.; Kurdyukova, Ekaterina G.; Kalinin, Yurii E.; Sitnikov, Aleksander V.; Котов, Леонид Н.; Курдюкова, Екатерина Г.; Калинин, Юрий Е.; Ситников, Александр В. (Сибирский федеральный университет. Siberian Federal University, 2017-05)
    The research was devoted to a studying of the spectra effective permeability and losses in the magnetic composite films at different ratios of concentrations of metal and dielectric. The effective permeability was ...

  • Iron Sulfide Nanoparticles: Preparation, Structure, Magnetic Properties 

    Ivantsov, Ruslan D.; Edelman, Irina S.; Dubrovsky, Andrey A.; Zharkov, Sergey M.; Velikanov, Dmitry P; Lin, Chun-Rong; Tseng, Yaw-Teng; Lin, Kun-Yauh; Иванцов, Руслан Д.; Эдельман, Ирина С.; Дубровский, Андрей А; Жарков, Сергей М.; Великанов, Дмитрий П.; Лин, Чун-Рон; Чжень, Йау-Тенг; Ши, Кун-Йау (Сибирский федеральный университет. Siberian Federal University, 2017-05)
    The series of iron sulfide nanoparticles (NPs) were synthesized with the polyol mediated process which exploits high-boiling polyalcohol solvents at different boiling temperatures (TB) what determined the NPs phase state ...

  • Modeling the dc Current Flow in Granular Superconductor Wires 

    Belodedov, Mikhail V.; Ichkitize, Levan P.; Белодедов, Михаил В.; Ичкитидзе, Леван П. (Сибирский федеральный университет. Siberian Federal University, 2017-05)
    Granular superconductor considered as a multiple Josephson medium, for modeling the electrodynamics of which the averaged material equation has being proposed. Evaluations of the critical parameters of the medium (the ...

  • Technological Features Influence on Magnetic Sensitivity of Sensor Based on Ferromagnetic Structures 

    Djuzhev, Nikolay A.; Iurov, Aleksey S.; Mazurkin, Nikita S.; Chinenkov; Дюжев, Николай А.; Юров, Алексей С.; Мазуркин, Никита С.; Чиненков, Максим Ю (Сибирский федеральный университет. Siberian Federal University, 2017-05)
    Main urgent problems of the magnetic devices and primary converters development based on the mag- netoresistive structures are the sensitivity improvement and thermal stability. The sensitivity was de- termined as the ...

  • Thermovibrational Low-Mode Model of Convection in a Horizontal Layer with Longitudinal Vibrations 

    Sharifulin, Vadim A.; Шарифулин, Вадим А. (Сибирский федеральный университет. Siberian Federal University, 2017-05)
    Thermovibrational convection in a horizontal layer of fluid between isothermal solid boundaries heated to different temperatures in the presence of longitudinal vibrations is considered in this paper. Stability ...

  • Finite Ion Size Effects on Electrolyte Transport in Nanofiltration Membranes 

    Ryzhkov, Ilya I.; Minakov, Andrey V.; Рыжков, Илья И.; Минаков, Андрей В. (Сибирский федеральный университет. Siberian Federal University, 2017-05)
    The pressure–driven electrolyte transport through nanofiltration membrane pores with specified wall po- tential is investigated theoretically. The finite ion size effect is taken into account by introducing an additional ...

  • D’Alembert’s Paradox in Near Real Conditions 

    Koptev, Alexander V.; Коптев, Александр В. (Сибирский федеральный университет. Siberian Federal University, 2017-05)
    This paper examines the D’Alembert’s paradox in the flow of ideal incompressible medium around a cylinder when flow conditions are close to real ones. The velocity profile of incoming flow is specified on a section at a ...

  • Nanofluid Flow over a Stretching Surface in Presence of Chemical Reaction and Thermal Radiation: An Application of Lie Group Transformation 

    Das, Kalidas; Sarkar, Amit; Kundu, Prabir Kumar; Дас, Калидас; Саркар, Амит; Кунду, Пробир Кумар (Сибирский федеральный университет. Siberian Federal University, 2017-05)
    This paper concerns with a steady MHD boundary layer flow of an electrically conducting nanofluid over a vertical permeable stretching surface with variable stream conditions. The transport model includes the effect of ...

  • On Some Maximal Clone of Partial Ultrafunctions on a Two-element Set 

    Badmaev, Sergey A.; Бадмаев, Сергей А. (Сибирский федеральный университет. Siberian Federal University, 2017-05)
    Multifunctions on a two-element set are considered in this paper. Functions from finite set to set of all subsets of this set are called multifunctions. Partial functions, hyperfunctions, ultrafunctions, par- tial ...

  • Calculation of Density of States for FeAs-based Superconductors 

    Kashurnikov, Vladimir A.; Krasavin, Andrey V.; Zhumagulov, Yaroslav V.; Кашурников, Владимир А.; Красавин, Андрей В.; Жумагулов, Ярослав В. (Сибирский федеральный университет. Siberian Federal University, 2017-05)
    The spectral and the total density of states were calculated for two-dimensional FeAs-clusters within the limits of the two-orbital model, which is widely used for modeling iron-based superconductors. The spectra were ...

  • Kolmogorov System with Explicit Hyperbolic Limit Cycle 

    Benyoucef, Salah; Bendjeddou, Ahmed; Бенусеф, Салах; Бенжедду, Ахмед (Сибирский федеральный университет. Siberian Federal University, 2017-05)
    A class of Kolmogorov differential system is introduced.We show that under suitable assumptions on parameters, an algebraic hyprbolic limit cycle can occur, the explicit expression of this limit cycle is given

  • Two-layer Model of Reflective Ferromagnetic Films in Terms of Magneto-optical Ellipsometry Studies 

    Maximova, Olga A.; Ovchinnikov, Sergey G.; Kosyrev, Nikolay N.; Lyaschenko, Sergey A.; Максимова, Ольга А.; Овчинников, Сергей Г.; Косырев, Николай Н.; Лященко, Сергей А. (Сибирский федеральный университет. Siberian Federal University, 2017-05)
    An approach to analysis of magneto-optical ellipsometry measurements is presented. A two-layer model of ferromagnetic reflective films is in focus. The obtained algorithm can be used to control optical and magneto-optical ...

  • A Class of Toeplitz Operators in Several Complex Variables 

    Fedchenko, Dmitrii P.; Федченко, Дмитрий П. (Сибирский федеральный университет. Siberian Federal University, 2017-05)
    In order to study the Toeplitz algebras related to a Dirac operators in a neighborhood of a closed bounded domain D with smooth boundary in Cn we introduce a singular Cauchy type integral. We compute its principal symbol, ...

  • Correctness of a Two-dimensional Cauchy Problem for a Polynomial Difference Operator with Constant Coefficients 

    Apanovich, Marina S.; Leinartas, Evgeny K.; Апанович, Марина С.; Лейнартас, Евгений К. (Сибирский федеральный университет. Siberian Federal University, 2017-05)
    The correctness of Cauchy problem for a polynomial difference operator is studied. An easily verifiable sufficient condition for correctness of a two-dimensional Cauchy problem for an operator with constant coefficients ...