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Orenburg State University january 29, 2022   RU/EN
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Yakupov G.S., Manakov N.A.
RESEARCH TASKS IN PHYSICS AS A MEANS OF FORMING THE RESEARCH COMPETENCE OF A FUTURE ENGINEER [№ 4 ' 2020]
One of the most important tasks of higher education is to create conditions for training highly qualified engineering and technical personnel who are ready not only to master and improve existing technologies, but also to develop new high-tech technologies. The basic basis for training such specialists can be practical and seminar classes in the course of physics, aimed at solving research problems, in conjunction with the corresponding independent work of students. Solving research problems: contributes to a deeper understanding of the physical processes and phenomena underlying modern high-tech technologies; allows you to understand the conditionality of modern technologies by physical laws and laws; develops skills to structure information about technical objects and technological processes in a logical sequence; forms a General idea of the sequence of solving a technological problem (setting goals, formulating hypotheses, planning and conducting experiments, analyzing results and conclusions). Since physics is studied in all engineering specialties, it would be advisable to start implementing this approach as part of the physics course, especially since there is a huge stock of tasks that can be offered to future engineers for solving both in seminars and practical classes, and as homework.

Eremin A.M., Zakharov P.V., Starostenkov M.D., Manakov N.A.
ON THE QUESTION ON THE STATISTICAL COMPARISON OF ACCURATE DISCRETE BREEZERS WITH QUASI-BREEZE MODEL SOLUTIONS OF A3B STEHOMETRY CRYSTAL [№ 5 ' 2018]
The method of molecular dynamics is used to perform a statistical comparison of exact discrete breathers with quasi-breather model solutions of the A3B stoichiometry crystal, using the example of Pt3Al. A phonon spectrum of this model crystal is obtained, the dependences of the root-mean-square deviation, the coefficient of variation, and the mean frequency of the model quasi-breather on the time of its existence are obtained. Also within the framework of this model, the following statistical characteristics and dependencies were calculated: a grouped statistical series of absolute and relative frequencies, a polygon of absolute and relative frequencies, a histogram of relative frequencies, an empirical distribution function, an estimate of the mathematical expectation and variance of the original sample. Analysis of statistical data allows us to conclude that in the model under consideration using the interatomic interaction potential obtained by the immersed atom (EAM) method, the quasi-breather solution differs slightly from the exact breather solution.Moving discrete breather interactions with the point defect in crystal with A3B composition taken as an example Pt3Al are studied by the method of molecular dynamics.

Zakharov P.V., Eremin A.M., Manakov N.A., Starostenkov M.D., Vdovin R.S.
COOPERATIVE ATOMIC DISPLACEMENTS NEAR INTERPHASE BOUNDARIES NI-γFE [№ 6 ' 2016]
By method of molecular dynamics studied the cooperative atomic displacements near the interface a bimetal solid-phase contact Ni-γFe. The differences in the behavior of the Ni and Fe atoms with their participation in the process of mass transfer across borders is established. Currently still a lot of unresolved issues related to the atomic structure of interfaces and mechanisms of their interaction with a variety of defects generated by, for example, by radiation exposure. In particular, special interest is the cooperative atomic displacements near the interphase boundaries and their contribution to the transport of energy and mass. It is shown that the introduction of interstitial atoms near the interface can cause a cooperative atomic displacements that lead to the climb of misfit dislocations. All cooperative atomic displacements proceeded on crowdions mechanism along the packed rows. The differences of behavior of atomic displacements on the number of interstitial atoms, and their type. The differences in the behavior of atoms, apparently, due to the high binding energy of the type Ni-γFe compared with connections type γFe-γFe, resulting in the Fe atoms are more mobile than the Ni atoms and penetrate through the interface is much more intense. Such activity of Fe atoms near the interface Ni-γFe border creates the preconditions for the consideration of such phenomena in the boundary as the basis for the creation of new materials with specific desired properties.

Zakharov P.V., Eremin A.M., Starostenkov M.D., Manakov N.A.
MOVING DISCRETE BREATHER INTERACTION WITH THE POINT DEFECT IN THE CRYSTAL WITH A3B COMPOSITION [№ 3 ' 2016]
Moving discrete breather interactions with the point defect in crystal with A3B composition taken as an example Pt3Al are studied by the method of molecular dynamics. The problem of interaction the objects of soliton with topological defects in the crystal is important for assess the prospects of the use of such solitons, as discrete breathers, in technological processes. As a point defect interstitial Al atom is, placed into the tetrahedral cavity of the crystal. To make excitation of the moving discrete breather two Al atoms were deviated from their equilibrium position on the value of 0,5–1 A and 1 A to the opposite sides along the densely packed directions this way the initial velocity of the discrete brearher moving through the crystal. Moving discrete breather excitation is possible along the densely packed directions: <110>, <011>, <101>, <110>. In the chosen model several atoms of the light sublattice participate in the moving discrete breather oscillations.In this case moving discrete breathers can migrate through the crystal at a considerable distance, almost without dissipation its energy. The obtained data allow us to judge about moving discrete breather influence on the point defect in the crystal due to its speed, energy and the distance to the defect. This opens up a prospect of usage such objects as analyzer of alloy purity and defect structures in the crystals with A3B composition. Moreover such objects can be used to transfer energy or information along the crystal.

Zakharov P.V., Eremin A.M., Manakov N.A., Starostenkov M.D., Markidonov A.V.
BEHAVIOR OF THE QUASI-BREATHER MODE IN PT3AL CRYSTAL WITH THE POINT DEFECTS [№ 9 ' 2015]
Nowadays the localized oscillations of the atoms or separate atomic groups are being studied in the perfect chips what makes the usage of the acquired results more difficult when studying the real crystals with the deffects. In this researсh by the method of molecular dynamics we study influence of the point defects on the quasi-breather mode behavior in stoichiometry crystal A3B using Pt3Al as an example. As point defects there are divacancies, trivacancies Pt in the crystal of Pt3Al as well as interstitial atoms of Al that are placed into the tetrahedral vacuums. The considered model is a bulk stoichiometry crystal A3B, where the atoms interact through Morse pair potential. It was found that point defects within Pt3Al alloy substantially influence on the quasi-breather mode in the case of their close arrangement. The exposure is in the high-amplitude localized oscillations destruction with the further energy dispersion through the crystal. But it's worth to remark that while high-amplitude oscillations degradation dispersion predominantly takes place into Al sublattice where the energy stays localized because of the forbidden band availability in the phonon spectrum of Pt3Al crystal during the long period of time. Besides it's established that there is a quasi-breather mode extended stability region near Pt divacancy and trivacancy. In the event of the observing at the point defect in the form of the interstitial Al atom, that is implantated into the tetrahedral vacuum such region does not exist. The acquired results should be counted while investigating the features and qualities of the real stoichiometry crystals А3В.

Belonovsky I.D., Kostryukov A.V., Manakova O.S.
COMPETENCES OF RESOURCE-SAVING AND THEIR FORMATION IN ENGINEERING PREPARATION [№ 12 ' 2013]
In article actual competences of students of the engineering directions the preparations providing the solution of problems of economy and rational use of resources of the region and production are analyzed. Pedagogical experiment on formation of competences of the resource-saving, made on the basis of the Orenburg state university and its branch is described. The questionnaires providing diagnostics of formation of competences of resource-saving of students are developed. Tools and pedagogical means of formation of competences — a complex of informattsionno-training materials, cases and problems of resource-saving, and also discipline at a choice and special courses in engineering preparation of future bachelors and masters are presented. Increase of level of economic culture and level of formation of competences of resource-saving of students to the solution of problems of resource-saving became result of use of a complex in educational process of higher education institution.

Manakov N.A., Tolstobrov Yu.V., Gerasimov F.A.
INFLUENCE OF THICKNESS ON THE DOMAIN STRUCTURE OF THIN MAGNETIC FILMS [№ 1 ' 2011]
With the aid of numerical simulation of the magnetization distribution we obtained a rigorous theoretical basis for the influence of thickness and magnetic pre-history of the domain structure of films with perpendicular magnetic anisotropy.

Manakov Ju. A., Kupriyanov A.N.
THE BREADTH OF PLANTS ECOLOGICAL AMPLITUDE IN ECOTOP CONDITIONS OF TECHNOGENIC LANDSCAPE. [№ 4 ' 2010]
In the article studying structures of flora technogenic ecotopes (open-cut mine dumps) by methods of comparative floristics is submitted. 8 basic groups of habitats are allocated and according to them — 8 parcial florae. The analysis of breadth of plants ecological amplitude is lead on the basis of their occurrence in geobotanical descriptions.

Manakov N.A., Tolstobrov Yu.V., Shiling G.S.
MICROMAGNETIC MODELING OF SURFACE ANISOTROPY INFLUENCE ON BLAST FURNACE STRUCTURES IN NANNOPLATE [№ 10 ' 2009]
The results of numeral modeling of blast furnace structures in nannoplate with surface anisotropy are presented in this article. It is shown that in the same example equilibrium conditions are possible, on which turning on of surface anisotropy influences in different ways: a) don’t influence notably, b) influence only on the structure of blast furnace borders, c) change the type of blast furnace structures.

Manakov Yu.A.
PARTIAL FLORAS OF INDUSTRIAL ECOTOPES OF KUZBASS [№ 9 ' 2009]
The article covers partial floras of 8- meso- and microecotopes of overburden refuse. Taxonomic analysis in ecotopes has been carried out in general. It is shown that the number of species in partial floras of refuses depends directly upon how favourable ecotope is, which in turn is determined by lithology, orography and moisture regime.

Manakov N.A., Tolstobrov Yu.V.
REGARDING FORMATION OF DOMAIN STRUCTURES IN THIN FERROMAGNETIC PLATES [№ 9 ' 2008]
The results of numerical simulation of distribution of magnetization in ferromagnetic nanoplates have been shown. The results of calculation give an opportunity to gain detailed insight upon distribution of magnetization in these objects and extend our idea of formation of domain structures in ferromagnetic of limited size.

Kolesnikov P.N., Manakov N.A., Tolstobrov Yu.V.
MICROMAGNETIC MODELING OF DOMAIN STRUCTURES AT MULTICHIP PRISM OF TRIANGULAR SECTION [№ 1 ' 2007]
The results of numeral modeling of magnetization distribution at infinitely long multichip prism of triangular section are presented in this article. Several types of domain structures arisen at variation of magnetic parameters and size of monocrystal are revealed here. The sphere of every discovered structures existence is shown on diagram.

Manakov N.A., Eremin A.M., Tolstobrov Yu.V.
MODELING OF BACK DOMAINS FORMATION PROCESS ON HETEROGENEITY IN HIGH-AEOLOTROPIC MONOAXIAL MAGNETS [№ 2 ' 2006]
This article is devoted to the theoretical analysis of the magnetic reversal process of high-aeolotropic monoaxial magnet with single coherent and incoherent low-aeolotropic magnetic isolations of different form and size in frame of micromagnetics theory.

Manakov N.A., Pletneva M.V., Tolstobrov Yu.V.
THERMIC MAGNETIZATION OF HIGH-ANISOTROPIC MAGNETICS [№ 1 ' 2006]
The results of thermic analysis of thermic magnetization effect observed in quick-hardened alloys SmCo5 and Nd2Fe12B are given in this article. New mechanism of thermic magnetization in these alloys was proved by numeral modeling in frame of micromagnetics theory. The opportunity of thermic magnetization of monocrystals of definite size high-anisotropic magnetics was predicted here.

Savchenko E.A., Shashkova L.V., Manakov N.A.
SYNERGETIC CONCEPTION OF HYDROGEN DAMAGEABILITY OF METALS AND METALS (STAGES OF DEVELOPMENT AND PERSPECTIVES) [№ 1 ' 2006]
It is shown in the article that synergetic approach to the phenomenon of hydrogen materials fragility, originated at the contact with damp hydric sulphide gas, allowed getting original scientific results, working out theory of hydrogen fragility and solving actual practical tasks of diagnostics and increase of steel hydrogen resistance. A new concept of fractal energy hierarchy of structural material conditions, which has an applied and fundamental meaning and opens opportunities of energy parameterization of microstructures were introduced in physics of durability and materials science.


Editor-in-chief
Sergey Aleksandrovich
MIROSHNIKOV

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© Электронное периодическое издание: ВЕСТНИК ОГУ on-line (VESTNIK OSU on-line), ISSN on-line 1814-6465
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