Журнал СФУ. Математика и физика. Journal of SibFU. Mathematics & Physics: Новые ресурсы

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    • Study of New Composite Materials Based on Epoxy Resin with Photoluminescence Effect 

      Brusentseva, Tatyana A.; Lukin, Stanislav E.; Брусенцева, Татьяна А.; Лукин, Станислав Э. (Siberian Federal University. Сибирский федеральный университет, 2024-02)
      Strontium aluminate doped with europium with various particle sizes was added to epoxy resins ED-20 and Crystal 85-5 in a mass concentration of 0% to 17%. Mechanical tests for three-point bending and instrumental indentation ...

    • A Note on Two General Reduction Formulas for the Srivastava-Daoust Double Hypergeometric Functions 

      Musharraf Ali; Harsh Vardhan Harsh; Arjun K. Rathie; Мушарраф Али; Харш Вардхан Харш; Арджун К. Рэти (Siberian Federal University. Сибирский федеральный университет, 2024-02)
      The aim of this note is to provide two new and general reduction formulas for the Srivastava- Doust double hypergeometric functions. A few interesting special cases have also been given

    • Influence of Nanomodifying Additives and Strengthening Phase on the Structure and Properties of Laser Coating of Porous Titanium 

      Skorokhod, Ksenia A.; Cherepanov, Anatoly N.; Malikov, Aleksander G.; Krasnov, Danila A.; Скороход, К.А.; Черепанов, А.Н.; Маликов, А.Г.; Краснов, Д.А. (Siberian Federal University. Сибирский федеральный университет, 2024-02)
      The results of an experimental study of the influence of nanomodifying additives on the structure and mechanical properties of coatings during laser surfacing of a composite powder with a strengthening phase on porous ...

    • Reduction of the Cosserat-type Nonlinear Equations to the System of Godunov’s Form 

      Sadovskii, Vladimir M.; Садовский, Владимир М. (Siberian Federal University. Сибирский федеральный университет, 2024-02)
      The complete system of equations for the dynamics of a Cosserat-type continuum with couple stresses under finite strains and particle rotations in Lagrangian variables is reduced to a compatible system of conservation ...

    • Chebyshev Polynomials with Zeros outside the Open Arc Segment 

      Rybakova, Natalia N.; Рыбакова, Наталья Н. (Siberian Federal University. Сибирский федеральный университет, 2024-02)
      The problem of unitary polynomials of degree n with real coefficients least deviating from zero on an arbitrary fixed arc of a circle with a zero set outside an open segment of the same arc is considered. The description ...

    • Computer-aided Design of Polymer-based Composites Using Multi-scale Models 

      Panin, Sergey V.; Lyukshin, Boris A.; Grishaeva, Nataliya Y.; Bochkareva, Svetlana A.; Panov, Iliya L.; Панин, Сергей В.; Люкшин, Борис А.; Гришаева, Наталья Ю.; Бочкарева, Светлана А.; Панов, Илья Л. (Siberian Federal University. Сибирский федеральный университет, 2024-02)
      The study is devoted to computer-aided design of particulate polytetrafluoroethylene-based composites for increasing their thermal conductivity values (as much as possible) with minimal deteriora- tion of the mechanical ...

    • Three-dimensional Simulation of Heat and Moisture Transfer in the Human Bronchial Tree 

      Medvedev, Alexey E.; Golysheva, Polina S.; Медведев, Алексей Е.; Голышева, Полина С. (Siberian Federal University. Сибирский федеральный университет, 2024-02)
      A mathematical model of heat and mass transfer in human airways has been developed. Three–dimensional calculations of the distribution of heat and humidity of inhaled air in the human bronchial tree have been performed. ...

    • Microstructural and Phase Transformations in Aluminium-Lithium Alloys after Laser Welding 

      Malikov, Aleksander G.; Vitoshki, Igor E.; Karpov, Evgeny V.; Kuper, Konstantin E.; Mironova, Mariya I.; Zavialov, Alexey P.; Маликов, А.Г.; Витошкин, И.Е.; Купер, К.Э.; Карпов, Е.В.; Миронова, М.И.; Завьялов, А.П. (Siberian Federal University. Сибирский федеральный университет, 2024-02)
      The article shows the results of research on microstructural and phase transformation in aluminium-lithium alloys caused by laser welding followed by heat processing based on quenching and artificial aging. The microstructure ...

    • Study of Magnetic Anisotropy of Cobalt Films Separated by a Copper Layer Depending on the Thickness of the Layers 

      Sukhachev, Ruslan A.; Mamonova, Marina V.; Prudnikov, Pavel V.; Сухачев, Руслан А.; Мамонова, Марина В.; Прудников, Павел В. (Journal of Siberian Federal University. Сибирский федеральный университет, 2023-12)
      This work is devoted to the numerical study of the magnetic properties of the Co/Cu/Co system using the VASP software package. The influence of the contributions of magnetocrystalline anisotropy and shape anisotropy on ...

    • On the Non-standard Interpolations in Cn and Combinatorial Coefficients for Weil Polyhedra 

      Durakov, Matvey E.; Ulvert, Roman V.; Tsikh, August K.; Дураков, Матвей Е.; Ульверт, Роман В.; Цих, Август К. (Journal of Siberian Federal University. Сибирский федеральный университет, 2023-12)
      Multidimensional non-standard interpolation has been recently presented in an article by D. Alpay and A. Yger. We are talking about algebraic interpolation where discrete roots of a system of polynomial equations serve ...

    • Scaling Behavior of Complex Low-dimensional Spin Systems 

      Shlyakhtich, Maria A.; Egorina, Anastasia S.; Drovorub, Egor V.; Prudnikov, Vladimir V.; Prudnikov, Pavel V.; Шляхтич, Мария А.; Егорина, Анастасия С.; Дроворуб, Егор В.; Прудников, Владимир В; Прудников, Павел В. (Journal of Siberian Federal University. Сибирский федеральный университет, 2023-12)
      We studied the non-equilibrium properties of spin-valve structures like a main elements of spintronics. We observed the aging effects in non-equilibrium critical behavior like a two-time dependence of measurement quantities: ...

    • Manifestation of Slow Dynamics in Multilayer Nanostructures with Different Thicknesses of Magnetic Films 

      Prudnikov, Vladimir V.; Mamonova, Marina V.; Druziev, Dmitry A.; Khitrintseva, Valeria V.; Прудников, Владимир В.; Мамонова, Марина В.; Друзьев, Дмитрий А.; Хитринцева, Валерия В. (Journal of Siberian Federal University. Сибирский федеральный университет, 2023-12)
      The results of a numerical Monte Carlo study of the behavior of a trilayer nanostructure with magnetization oriented in the film plane with ferromagnetic film thicknesses N = 3 and 21 MLs are pre- sented. The non-equilibrium ...

    • Changes of the Fermi Surface Topology in the Three-orbital Model for Iron Pnictides with the Spin-orbit Coupling 

      Ivanov, Danil A.; Togushova, Yuliya N.; Korshunov, Maxim M.; Иванов, Данил А.; Тогушова, Юлия Н.; Коршунов, Максим М. (Journal of Siberian Federal University. Сибирский федеральный университет, 2023-12)
      Effect of the spin-orbit coupling on the band structure and the Fermi surface of the three- orbital model is studied. The inter-orbital part of the model is reformulated to fully conform with the iron lattice symmetry. ...

    • Fermion Parity of Phases Supporting Multiple Majorana Modes in a Superconducting Nanowire 

      Gamov, Alexander; Zlotnikov, Anton O.; Гамов, Александр; Злотников, Антон О. (Journal of Siberian Federal University. Сибирский федеральный университет, 2023-12)
      The fermion parity of the ground state is determined in various topological phases of the semiconducting nanowire under external magnetic field with proximity-induced superconductivity and strong spin-orbit interaction. ...

    • Symmetry Analysis of Radial Profiles of Magnetic Skyrmions 

      Enkova, Eugenia O.; Stepanenko, Vitaly A.; Shustin, Maksim S.; Енькова, Евгения О.; Степаненко, Виталий А.; Шустин, Максим С. (Journal of Siberian Federal University. Сибирский федеральный университет, 2023-12)
      The search for analytical profiles of chiral magnetic structures such as 2D magnetic skyrmions (MS) is important for their theoretical study. Since the Euler–Lagrange (EL) equations for such excita- tions are not solved ...

    • On the Closedness of Carpets of Additive Subgroups Associated With a Chevalley Group Over a Commutative Ring 

      Nuzhin, Yakov N.; Нужин, Яков Н. (Journal of Siberian Federal University. Сибирский федеральный университет, 2023-12)
      Let A = {Ar | r ∈ Φ} be a carpet of additive subgroups of type Φ over an arbitrary commu- tative ring K. A sufficient condition for the carpet A to be closed is established. As a corollary, we obtain a positive answer ...

    • A Multifaceted Approach to Forming Mathematical Digital Competency of Future Engineers in Teaching Applied Mathematics 

      Noskov, Mikhail V.; Shershneva, Viktoria A.; Skafa, Elena I.; Evseeva, Elena G.; Korolev, Mark E.; Носков, Михаил В.; Шершнева, Виктория А.; Скафа, Елена И.; Евсеева, Елена Г.; Королёв, Марк Е. (Journal of Siberian Federal University. Сибирский федеральный университет, 2023-12)
      The paper deals with the problem of forming mathematical digital competency of engineering students. Authors suggest a comprehensive approach to solve the problem which is implemented in a course of applied mathematics ...

    • Study of Trapped Magnetic Field Relaxation in a Cylindrical Micron-Sized HTS 

      Mikhailov, Artem A.; Maksimova, Anastasiia N.; Moroz, Anna N.; Kashurnikov, Vladimir A.; Михайлов, Артем А.; Максимова, Анастасия Н.; Мороз, Анна Н.; Кашурников, Владимир А. (Journal of Siberian Federal University. Сибирский федеральный университет, 2023-12)
      Relaxation curves of a cylindrical Bi2Sr2CaCu2O8-δ superconductor several microns in di- ameter have been calculated by means of the Monte Carlo method within the model of a layered high- temperature superconductor in ...

    • First-principles Calculations of the Exchange Coupling Constants for an Iron Film 

      Makeev, Michael Yu.; Mamonova, Marina V.; Макеев, Михаил Ю.; Мамонова, Марина В. (Journal of Siberian Federal University. Сибирский федеральный университет, 2023-12)
      First-principles calculations of the energy and magnetic characteristics of Fe films on Cr substrates are carried out with the use of the VASP software package in PAW PBE approximation. The exchange interaction parameters ...

    • Linear Autotopism Subgroups of Semifield Projective Planes 

      Kravtsova, Olga V.; Skok, Daria S.; Кравцова, Ольга В.; Скок, Дарья С. (Journal of Siberian Federal University. Сибирский федеральный университет, 2023-12)
      We investigate the well-known hypothesis of D. R. Hughes that the full collineation group of non-Desarguesian semifield projective plane of a finite order is solvable (the question 11.76 in Kourovka notebook was written ...