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Journal articles on the topic 'Vector magnetization characteristics'

Author: Grafiati

Published: 4 June 2025

Last updated: 15 July 2025

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1

Xiao, Xiao, Fabian Müller, Martin Marco Nell, and Kay Hameyer. "Modeling anisotropic magnetic hysteresis properties with vector stop model by using finite element method." COMPEL - The international journal for computation and mathematics in electrical and electronic engineering 41, no. 2 (2021): 752–63. http://dx.doi.org/10.1108/compel-06-2021-0213.

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Purpose This paper aims to use a history-dependent vector stop hysteresis model incorporated into a two dimensional finite elements (FE) simulation environment to solve the magnetic field problems in electrical machines. The vector stop hysteresis model is valid for representing the anisotropic magnetization characteristics of electrical steel sheets. Comparisons of the simulated results with measurements show that the model is well appropriate for the simulation of electrical machines with alternating, rotating and harmonic magnetic flux densities. Design/methodology/approach The anisotropy o

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2

S., T. Tolmachev, and V. Il'chenko A. "THE RECIPROCITY PRINCIPLE FOR A NONLINEAR ANISOTROPIC MEDIUM WITHOUT HYSTERESIS: THEORY AND PRACTICE OF APPLICATION." Electrical engineering & electromechanics, no. 2 (April 16, 2020): 40–45. https://doi.org/10.20998/2074-272X.2020.2.06.

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<em>The construction of the correct vector material equations for nonlinear anisotropic soft magnetic materials remains one of the main reserves for increasing the accuracy of mathematical models in solving magnetostatic problems in the field formulation. The aim of the work is to establish asymptotic expressions for the reciprocity principle, which is a fundamental property of reversible magnetization processes of nonlinear anisotropic media, and to use the obtained results to optimize the computational process when constructing the vector magnetization characteristic and differential permeab

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3

Юсипова, Ю. А. "Частота и быстродействие спинового вентиля с планарной анизотропией слоев". Физика твердого тела 62, № 9 (2020): 1361. http://dx.doi.org/10.21883/ftt.2020.09.49754.29h.

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The dynamics of the magnetization vector in the free layer of a layered spin-valve structure was simulated. As materials for the free and fixed layers, six magnetically soft ferromagnets with longitudinal anisotropy were considered. The types of magnetization dynamics that are of practical interest for MRAM and HMDD (switching of the magnetization vector), STNO (stable precession of the magnetization vector), and the base element PSL (switching of the magnetization vector with two probable outcomes) were highlighted. The ranges of currents and fields corresponding to these operating modes of t

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Ma, Guoqing, Lingwei Meng, and Lili Li. "Fast Magnetization Vector Inversion Method with Undulating Observation Surface in Spherical Coordinate for Revealing Lunar Weak Magnetic Anomaly Feature." Remote Sensing 16, no. 2 (2024): 432. http://dx.doi.org/10.3390/rs16020432.

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The three-dimensional magnetic vector structure (magnetization intensity and direction) of the planet can be effectively used to analyze the characteristics of its formation and operation. However, the quick acquisition of a large region of the magnetic vector structure of the planet with bigger observation surfaces undulation is hard and indispensable. We firstly proposed a fast magnetization vector inversion method for the inversion of a magnetic anomaly with the undulating observation surfaces in the spherical coordinate system, which first transforms the data to a plane when the data are d

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Guskov, Vladimir Olegovich, Aleksandr Vasil'evich Saushev, Veniamin Francevich Samoseiko, and Andrey Viktorovich Lavin. "Maximizing the torque of an asynchronous motor taking into account losses power when limited by the energy converter." Vestnik of Astrakhan State Technical University. Series: Marine engineering and technologies 2024, no. 3 (2024): 91–97. http://dx.doi.org/10.24143/2073-1574-2024-3-91-97.

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The issues of optimal control of an asynchronous motor according to the criterion of the maximum of its electromagnetic torque are considered. It is shown that electric energy converters feeding the windings of electric machines have semiconductor switches in their composition, the characteristics of which are subject to known limitations. One of these characteristics for a semiconductor key is the value of the maximum current that it can pass through itself for a long time without breaking down. The electromagnetic torque of an asynchronous electric motor with vector control is proportional t

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Leidhold, R., D. Kaluhin, and O. Tolochko. "EXPERIMENTAL RESEARCH OF THE MAGNETIZATION AND DEMAGNETIZATION PROCESSES OF THE VECTOR-CONTROLLED INDUCTION MOTOR." Tekhnichna Elektrodynamika 2024, no. 6 (2024): 44–49. http://dx.doi.org/10.15407/techned2024.06.044.

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Experimental research of the processes of magnetization and demagnetization for the motionless vector-controlled induction motor was performed, according to a linear law with a variation in the duration of these processes. The methodology of research during which the orthogonal components of the stator and rotor currents were recorded in the rotor flux reference frame, the rotor flux module and the energy of the total losses in the stator and rotor copper is described. The main characteristics and parameters of laboratory equipment and facilities are given. From the point of view of minimizing

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7

Shi, Minxia, Teng Li, Shuai Yuan, Leran Zhang, Yuzheng Ma, and Yi Gao. "Iron Loss and Temperature Rise Analysis of a Transformer Core Considering Vector Magnetic Hysteresis Characteristics under Direct Current Bias." Materials 17, no. 15 (2024): 3767. http://dx.doi.org/10.3390/ma17153767.

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Direct current (DC) bias induced by the DC transmission and geomagnetically induced current is a critical factor in the abnormal operation of electrical equipment and is widely used in the field of power transmission and distribution system state evaluation. As the main affected component, the vector magnetization state of a transformer core under DC bias has rarely been studied, resulting in inaccurate transformer operation state estimations. In this paper, a dynamic vector hysteresis model that considers the impact of rotating and DC-biased fields is introduced into the numerical analysis to

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8

Wakabayashi, Daisuke, Takashi Todaka, and Masato Enokizono. "Measurement of Three-Dimensional Magnetostriction on Grain-Oriented Electrical Steel Sheet." Journal of Electrical Engineering 62, no. 3 (2011): 153–57. http://dx.doi.org/10.2478/v10187-011-0025-z.

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Measurement of Three-Dimensional Magnetostriction on Grain-Oriented Electrical Steel Sheet This paper deals with the magnetostriction of a grain-oriented electrical steel sheet measured by using the two-dimensional vector magnetic property measurement system and a three-axial strain gage. The magnetostrictions in arbitrary direction are calculated with the measured strain tensors. The magnetostriction characteristics were changed depending on the magnetization process according to the exciting magnetic flux density and the exciting direction. In this paper, we make clear the relationship among

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9

Ishikawa, Takeo, and Naoto Igarashi. "Failure Diagnosis of Demagnetization in Interior Permanent Magnet Synchronous Motors Using Vibration Characteristics." Applied Sciences 9, no. 15 (2019): 3111. http://dx.doi.org/10.3390/app9153111.

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The detection of a precursor to the demagnetization of permanent magnets is very important because a high degree of reliability is necessary in permanent magnet synchronous motors (PMSMs). This paper investigated the diagnosis of very slight PM demagnetization. A part of the permanent magnet was altered to non-magnetic material so as to mimic the effect of demagnetization. The vibration characteristics were clarified for low demagnetization in PMSMs driven under vector control by experiments and 3D finite element (FE) analysis. We found that the amplitude of some components of the vibration wa

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Rezayee, Mohammad Hakim, Ahamd Qasim Akbar, Torabaz Poyesh, Ezatullah Rawnaq, Khair Mohammad Samim, and Hideki Mizunaga. "3D Geophysical Modeling Based on Multi-Scale Edge Detection, Magnetic Susceptibility Inversion, and Magnetization Vector Inversion in Panjshir, Afghanistan to Detect Probabilistic Fe-Polymetallic Bearing Zone." Geosciences 13, no. 12 (2023): 376. http://dx.doi.org/10.3390/geosciences13120376.

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The Panjshir Fe-Polymetallic ore deposit is a valuable geological resource in Afghanistan, rich in iron and multiple essential metallic minerals, with substantial potential for industrial development. The exploration phase faces challenges related to the complex geological settings, high variability of mineral compositions, and the need for advanced geophysical techniques to accurately locate and assess valuable metallic resources. Considering the strong magnetic characteristics exhibited by Fe-Polymetallic elements, geomagnetic data were employed to analyze and map the likely prospectivity of

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Du, Xuhao, Jie Pan, and Andrew Guzzomi. "Modeling the Hysteresis Characteristics of Transformer Core under Various Excitation Level via On-Line Measurements." Electronics 7, no. 12 (2018): 390. http://dx.doi.org/10.3390/electronics7120390.

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In this paper, the hysteresis characteristics of a transformer core are determined from limited on-line measured voltages and currents under certain excitations. A method for calculating the magnetization curve and hysteresis loops of the transformer core under various excitation is developed based on limited excitation conditions, and using the deep neural network, support vector regressor and the Wlodarski model. The coercivity and the amplitude of magnetic field strength of hysteresis loops can be captured with high accuracy based on this method. Then, a finite element model of the transfor

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12

Ta, Leyona, Mas Ayu Elita Hafizah, Yana Taryana, and Azwar Manaf. "Coercivity Dependence of Microwave Characteristics in Mechanically Alloyed SrFe_11.9-yMn_y/2Ti_y/2In_0.1O₁₉ (y = 0; 0,3; and 1.2)." Materials Science Forum 1028 (April 2021): 56–61. http://dx.doi.org/10.4028/www.scientific.net/msf.1028.56.

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Recent investigation on indium substituted SrFe11.9In0.1O19 has shown excellent remanence to the saturation magnetization ratio of much greater than the 0.5 that most suitable for isotropic permanent magnets. In this work, such material SrFe12-xInxO19 (x = 0; 0,05; 0,1; 0,2; and 0,5) with the highest value of remanent magnetization was modified by the co-substitution of Fe+3 in SrFe11.9In0.1O19 with Mn and Ti ions to reduce the coercivity which suitable for radar absorbing applications. A series of magnetic material with SrFe11.9-yMny/2Tiy/2In0,1O19 (y = 0,3; 0,6; 1,0 and 1,2) compositions wer

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13

Iusipova, Iuliia. "Critical switching characteristics of three-layered spin valve for different materials and alloys with uniaxial anisotropy." EPJ Web of Conferences 185 (2018): 01012. http://dx.doi.org/10.1051/epjconf/201818501012.

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We analyze the dependence of the current density and magnetic field switching on the magnetic parameters of the material of the ferromagnetic layers of the spin valve. Comparison of critical characteristics of the spin valve with longitudinal anisotropy of ferromagnetic layers fabricared of different materials showed that the promising materials for the fabrication of spin valve are cobalt, iron, their alloys, ferroborates of cobalt and alloys of cobalt with gadolinium. For these materials we produced and analyzed the bifurcation diagrams of equations describing the switching process of the sp

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14

Амеличев, В. В., Д. В. Костюк, Д. А. Жуков та ін. "Расчет передаточной характеристики анизотропного магниторезистивного преобразователя магнитного поля". NANOINDUSTRY Russia 13, № 3-4 (2020): 230–38. http://dx.doi.org/10.22184/1993-8578.2020.13.3-4.230.238.

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Представлена разработанная теоретическая модель одномерной неоднородности (МОН) и описаны основные факторы, влияющие на распределение вектора намагниченности тонкого магниторезистивного элемента анизотропного магниторезистивного преобразователя (АМРП). Получены результаты расчета вольт-эрстедных характеристик АМРП с помощью МОН, которые согласуются с экспериментальными данными. The developed theoretical model of one-dimensional heterogeneity (MODH) is presented. Described are the main factors affecting distribution of a thin magnetoresistive element magnetization vector of an anisotropic magne

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15

Antipin, Dmitriy, Vladimir Vorob'ev, Maksim Maslov, and Vadim Korchagin. "DEVICE FOR RESEARCHES OF MAGNETIC FIELD IMPACT UPON “WHEEL-RAIL” FRICTION PAIR CHARACTERISTICS." Bulletin of Bryansk state technical university 2020, no. 1 (2020): 34–39. http://dx.doi.org/10.30987/1999-8775-2020-2020-1-34-39.

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The paper is dedicated to the circuit diagram substantiation of the specialized roller bench for researches of the magnetic field impact upon wheel adhesion with a rail. On the basis of the analysis of the experimental plants available at present for the study of the contact interaction of wheels with rails it is defined that two-roller benches are the most efficient for the investigation of different outer factors impact upon wheel adhesion with a rail. Taking into account mentioned above there is offered an original design of the two-roller bench equipped with the device for friction area ma

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16

Trushin O.S., Fattakhov I.S., Popov A.A., et al. "Tailoring magnetic anisotropy and optical characteristics of nanostructural Co films by oblique angle deposition." Physics of the Solid State 65, no. 6 (2023): 953. http://dx.doi.org/10.21883/pss.2023.06.56107.16h.

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Thin Co films on inclined Si(001) substrates were obtained by electron-beam evaporation. It has been established that at angles of incidence of the evaporated material on the substrate of more than 80o (oblique angle deposition), arrays of free-standing Co nanocolumns with a cross section of 25 nm and an aspect ratio (length/transverse size) of at least 15 are formed on the substrate surface. In this case, the magnetic easy axis of the film is oriented along the axis of the nanocolumns, which leads to the appearance of a normal component of the magnetization vector to the film surface. When th

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17

BAEV, A. R., and N. P. MATOUSSEVITCH. "MASS LOSSES OF MAGNETIZED RHEOLOGICAL MEDIUMS SUBJECTED TO MAGNETIC FIELD." International Journal of Modern Physics B 16, no. 17n18 (2002): 2718–24. http://dx.doi.org/10.1142/s021797920201289x.

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Theoretical analysis and experimental research of the film flowing of magnetorheologic fluids when infinitive solid plate is retrieving from the former mediums were carried out. We have got dependencies of fluids mass losses m vs: velocity of moving plate V; magnitude of magnetic intensity, its gradient and angle φ between direction of intensity lines and normal vector to plane of plate. It is shown that theoretical and experimental m(φ) is anisotropy one and may change its magnitude more than 10 times. Real behavior and extreme characteristics of m(φ) depends on rhelogiacal parameters of MRS

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18

Simakov, G. M., V. V. Topovskiy, and I. A. Ilyenkov. "VECTOR CONTROL ALGORITHMS FOR AN ELECTROMECHANICAL UNBALANCE VIBRATION MODULE WITHOUT PRELIMINARY MAGNETIZATION OF THE ASYNCHRONOUS MOTOR." Bulletin of the South Ural State University. Ser. Computer Technologies, Automatic Control & Radioelectronics 21, no. 1 (2021): 35–48. http://dx.doi.org/10.14529/ctcr210104.

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With the development of electronic systems, the control of various asynchronous type electric motors is becoming more efficient and accurate. Such engines are used everywhere in the world, the variety of tasks performed by such mechanisms is growing every day, and the need for them is not decreasing. Nowadays, AC electric drive systems based on an asynchronous motor are becoming more widespread. This is due to the high reliability, simple design and relatively low cost of induction motors, as well as the rapid development of power converter technology, which makes it pos¬sible to create variou

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19

Garbiec, Tomasz, and Mariusz Jagiela. "Accounting for Magnetic Saturation Effects in Complex Multi-harmonic Model of Induction Machine." Energies 13, no. 18 (2020): 4670. http://dx.doi.org/10.3390/en13184670.

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Computations of quasi-dynamic electromagnetic field of induction machines using the complex magnetic vector potential require the use of the so-called effective magnetization curves, i.e., such in which the magnetic permeability is proportional to the amplitudes of magnetic flux density B or magnetic field strength H, not their instantaneous values. There are several definitions of that parameter mentioned in the literature provided for the case when B or H are monoharmonic. In this paper, seven different methods of determining the effective magnetization curves are compared in relation to the

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20

Pokrovskii, Sergey V., Irina V. Martirosian, and Dmitrii A. Aleksandrov. "Numerical 3D modeling of magnetic systems based on closed superconducting rings." Modern Transportation Systems and Technologies 10, no. 4 (2024): 537–55. https://doi.org/10.17816/transsyst637429.

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Aim. To compare the magnetic characteristics and levitation force of single-cut and double-cut closed HTS rings. Methods. Numerical calculations were performed using the finite element method in the Comsol Multiphysics software. Results. The vertical magnetization profiles were obtained for single- and double-slit HTS rings magnetized under a gradient magnetic field and a permanent magnet's field. The normalized levitation force was analyzed based on the number of winding layers for both closed and nonclosed configurations. The nonclosed winding was found to generate the highest levitation for

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21

Zainal, Yuda Bakti, Dedi, and Azwar Manaf. "Microstructure and Microwave Absorption Characteristics of BaTiO₃-CoFe₂O₄ Composites." Key Engineering Materials 855 (July 2020): 322–29. http://dx.doi.org/10.4028/www.scientific.net/kem.855.322.

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Magnetic and dielectric phases like CoFe2O4 and BaTiO3 are both intrinsically capable of absorbing electromagnetic waves. The characteristics of the two phases in a composite structure to obtain the combined effect of the existence of phases as composite components have been investigated. Observation of the microstructure of composites with the composition (1-x)BaTiO3-(x)CoFe2O4 has shown the compact structure of composite sample with an increased the mass density with increasing value of x. No changes in lattice constant of each phase in the composite structure. This ensures that no complete

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Hadžiselimović, Miralem, Tine Marčič, and Ivan Zagradišnik. "Efficient Approximation Procedure for Magnetization Characteristics Used in Performance Analysis of Highly Saturated Electrical Machines." Energies 17, no. 23 (2024): 6073. https://doi.org/10.3390/en17236073.

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The analytical and especially the numerical calculations of the magnetic fields of highly saturated electrical machines require a correctly given magnetizing curve. In practice, professional software may use many points of the magnetizing curve (sometimes 50 or more points). There is a high probability that a point will be entered or measured incorrectly. We have therefore set ourselves three objectives. The first is to reduce the number of points given. The second is to ensure that the curve is given analytically (in the form of orthogonal polynomials) and is as smooth as possible. This means

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Tagawa, I., and Y. Nakamura. "Effects of anisotropy field vector distribution in a recording medium on recording characteristics. FEM simulation with 3-D magnetization model." Journal of the Magnetics Society of Japan 14, no. 2 (1990): 123–26. http://dx.doi.org/10.3379/jmsjmag.14.123.

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Tagawa, I., and Y. Nakamura. "Effects of Anisotropy Field Vector Distribution in a Recording Medium on Recording Characteristics--FEM Simulation with 3-D Magnetization Model." IEEE Translation Journal on Magnetics in Japan 5, no. 11 (1990): 977–83. http://dx.doi.org/10.1109/tjmj.1990.4564385.

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Wang, Zhen, Zheming Fan, Xiang Li, Kai Xu, and Runjie Yu. "Measurement of Magnetic and Magnetostrictive Characteristics of Transformer Core Based on Triaxial Strain Gauge and B-H Vector Sensor." Sensors 23, no. 13 (2023): 5926. http://dx.doi.org/10.3390/s23135926.

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As is well known, the magnetostrictive phenomenon of electrical steel sheet is the main source of electricity in equipment such as transformers. The magnetostrictive characteristic of the actual transformer core is more complicated than that of single-sheet steel. The magnetostriction phenomenon of the transformer core cannot be fully understood by studying only a single piece of electrical steel, so it is necessary to study the local magnetic characteristics of the transformer directly. In this paper, two-limb, one-phase transformer core with a multi-step-lap construction was assembled, a lam

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Zaitsev, I. P., D. A. Katcai, and S. N. Ryzhov. "ROTARY ANGLE SENSOR FOR MONITORING THE POSITION OF ACTUATORS." Bulletin of the South Ural State University. Ser. Computer Technologies, Automatic Control & Radioelectronics 25, no. 2 (2025): 65–73. https://doi.org/10.14529/ctcr250206.

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The reliability of actuators is determined by the criteria of limit states, which are assessed by different types of sensors. The reliability of sensors depends on their design properties, features of technological support of their quality in the manufacturing process. The angular position of the rotary links of actuators is determined by different types of sensors, including rotary angle sensors. A non-contact sensor is considered. The sensor operation is based on the Hall measurement principle, which ensures its structural simplicity, reliability and long service life. The accuracy character

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Lee, Hoon-Ki, Tae-Kyoung Bang, Jeong-In Lee, et al. "Analytical Study and Comparison of Electromagnetic Characteristics of 8-Pole 9-Slot and 8-Pole 12-Slot Permanent Magnet Synchronous Machines Considering Rotor Eccentricity." Electronics 10, no. 16 (2021): 2036. http://dx.doi.org/10.3390/electronics10162036.

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In this study, a magnetic field is analyzed using an analytical method and compared with the electromagnetic characteristics of 8-pole 9-slot and 8-pole 12-slot permanent magnet synchronous machines considering rotor eccentricity. The magnetic flux density and back electromotive force (EMF) are derived using perturbation theory and electromagnetic theory. First, the Fourier modeling of a permanent magnet is performed through magnetization modeling, and two analysis regions are set based on several assumptions for applying the analytical method. Accordingly, the governing equations of the analy

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Niasar, Mojtaba Moslehi, Mohammad Jafar Molaei, and Alireza Aghaei. "Microwave absorption properties of Zn-doped barium ferrite (BaFe12-x Zn x O19) decorated reduced graphene oxide." International Journal of Materials Research 112, no. 6 (2021): 465–73. http://dx.doi.org/10.1515/ijmr-2020-8073.

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Abstract Reduced graphene oxide has attracted great interest for application as microwave absorbing materials during recent years. Barium ferrite (BaFe12O19) is also a hard magnetic material with microwave absorbing properties. In this research, Zn-doped barium ferrite/reduced graphene oxide nanocomposites were synthesized and their magnetic and microwave absorption properties were studied. Phase analysis, particle morphology, magnetic properties, and microwave absorption properties were investigated by means of X-ray diffraction, field-emission scanning electron microscopy, vibrating sample m

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Neilo, Alexey, Sergey Bakurskiy, Nikolay Klenov, Igor Soloviev, and Mikhail Kupriyanov. "Superconducting Valve Exploiting Interplay between Spin-Orbit and Exchange Interactions." Nanomaterials 12, no. 24 (2022): 4426. http://dx.doi.org/10.3390/nano12244426.

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We theoretically investigated the proximity effect in SNSOF and SF’F structures consisting of a superconductor (S), a normal metal (NSO), and ferromagnetic (F’,F) thin films with spin–orbit interaction (SOI) in the NSO layer. We show that a normal layer with spin–orbit interaction effectively suppresses triplet correlations generated in a ferromagnetic layer. Due to this effect, the critical temperature of the superconducting layer in the SNSOF multilayer turns out to be higher than in a similar multilayer without spin–orbit interaction in the N layer. Moreover, in the presence of a mixed type

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Goanţă, Viorel, and Constantin Ciocanel. "Fracture Toughness Evaluation of a Ni2MnGa Alloy Through Micro Indentation Under Magneto-Mechanical Loading." ACTA Universitatis Cibiniensis 69, no. 1 (2017): 89–99. http://dx.doi.org/10.1515/aucts-2017-0012.

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Abstract Ni2MnGa is a ferromagnetic alloy that exhibits the shape memory effect either induced by an externally applied magnetic field or mechanical stress. Due to the former, the alloy is commonly called magnetic shape memory alloy or MSMA. The microstructure of the MSMA consists of tetragonal martensite variants (three in the most general case) that are characterized by a magnetization vector which is aligned with the short side of the tetragonal unit cell. Exposing the MSMA to a magnetic field causes the magnetization vector to rotate and align with the external field, eventually leading to

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S., T. Tolmachev, L. Bondarevskyi S., and V. Il'chenko A. "MAGNETIC PROPERTIES OF MULTICOMPONENT HETEROGENEOUS MEDIA WITH A DOUBLY PERIODIC STRUCTURE." Electrical engineering & electromechanics, no. 1 (February 19, 2020): 29–38. https://doi.org/10.20998/2074-272X.2020.1.05.

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<em>Heterogeneous media have a wide range of practical applications. Media with a doubly periodic structure (matrices of high-gradient magnetic separators, etc.) occupy an important place. Their study is usually based on experimental and approximate methods and is limited to simple two-phase systems. The development of universal and accurate methods of mathematical modelling of electrophysical processes in such environments is an urgent task. The aim of the paper is to develop a method for calculating local and effective parameters of a magnetostatic field with minimal restrictions on the numb

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Tolmachev, S. T., and O. V. Ilchenko. "MATHEMATICAL MODELING OF THE MAGNETIC FIELD OF HIGH-GRADIENT MAGNETIC SEPARATORS WITH A DOUBLE-PERIODIC MATRIX STRUCTURE." Tekhnichna Elektrodynamika 2025, no. 2 (2025): 3–12. https://doi.org/10.15407/techned2025.02.003.

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A detailed justification of the method of calculating local and effective characteristics of magnetic filters of the matrix structure of high-gradient magnetic separators is given. It is shown that under the assumption of a doubly-periodic structure of the matrix and the plane-parallel character of the field, it allows to significantly expand the possibilities of existing methods due to the absence of significant restrictions on the geometric and physical parameters of the ferromagnetic elements of the matrix and their concentration. The method is based on the integral equation relative to the

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Odintsov, S. A., E. H. Lock, E. N. Beginin, and A. V. Sadovnikov. "Nonreciprocal propagation of spin waves in a bilayer magnonic waveguide based on yttrium-iron garnet films." Russian Technological Journal 10, no. 4 (2022): 55–64. http://dx.doi.org/10.32362/2500-316x-2022-10-4-55-64.

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Objectives. Nonreciprocal spin wave effects can manifest themselves in metalized films of ferrite garnets. By studying the dynamics of spin waves in micro- and nano-scale magnetic films, the possibility of using multilayer dielectric films of yttrium iron garnet (YIG) to ensure the manifestation of the nonreciprocity effect is demonstrated. This approach offers advantages compared to the use of a layered YIG/metal structure due to significantly lower spin-wave losses in the two-layer YIG film consisting of layers with different values of magnetization. Such films can be used in logical element

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Li, Ke, Heng Zhang, Xiaoyu Zheng, Chang Liu, and Qianding Chen. "Hydrogen Production by Water Electrolysis with Low Power and High Efficiency Based on Pre-Magnetic Polarization." Energies 15, no. 5 (2022): 1878. http://dx.doi.org/10.3390/en15051878.

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In this paper, a method of efficient hydrogen production using low-power electrolysis based on pre-magnetic polarization was proposed in order to improve the rate of hydrogen production by water electrolysis, with reduced energy consumption, molecular polarity, and stress–strain characteristics of distilled water under the condition of a pre-magnetic field. By constructing a microphysical model of hydrogen proton energy-level transition and a macroscopic mathematical model corresponding to magnetization vector-polarization hydrogen proton concentration in the pre-magnetic field, the ionic cond

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Queiroz, Lila Costa, Adalene Moreira Silva, Frederico Ricardo Ferreira Rodrigues de Oliveira e Sousa, Michele Zorzetti Pitarello, and Márcia Abrahão Moura. "Strategies for Targeting in Undercover Terrains: Modeling Multi-Source Data in Apuí Region, SW Amazon Craton, Brazil." Minerals 13, no. 1 (2023): 78. http://dx.doi.org/10.3390/min13010078.

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Exploring covered terrains is a challenge that requires the integration of multiple sources of knowledge, particularly in the initial stages of mineral exploration. The Apuí region, located in the Southwestern Amazon Craton, has a small and constant gold production, despite the deep cover and limited geological knowledge. The gold is mainly hosted in quartz veins and breccias that cut Paleoproterozoic volcano-sedimentary sequences. The occurrences have similar characteristics to magmatic–hydrothermal deposits, such as a lack of regional metamorphism and intense hydrothermalization. We undertoo

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Hurski, L. I., N. A. Kalanda, M. V. Yarmolich та ін. "SMALL-ANGLE SCATTERING OF NEUTRONS ON Sr₂FeMoO_6–δ SAMPLES WITH DIFFERENT-DEGREE SUPERSTRUCTURAL ORDERING OF Fe/Mo CATIONS". Doklady BGUIR 18, № 2 (2020): 5–13. http://dx.doi.org/10.35596/1729-7648-2020-18-2-5-13.

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Single-phase Sr2FeMoO6-δ samples with different-degreesuperstructiral ordering Fe/Mo cations superstructural ordering (P, 76, 86 and 93 %) were obtained by the solid-phase technique. Based on the results of measuring the magnetic characteristics in the samples, we found that an increase in magnetization (26.41, 32.36 and 42.66 A·m2·kg–1), magnetic moment (1.33, 3.07 and 3.58 μB/f.u.) and Curie temperatures (422, 428 and 437 K) withparameter P (76, 86 and 93 %) can be explained by the presence of antistructural defects, as well as antiferromagnetic inclusions. This determines the redistribution

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Ourahmoun Abbes. "Application of the G’/G Expansion Method for Solving New Form of Nonlinear Schrödinger Equation in Bi-Isotropic Fiber." Communications on Applied Nonlinear Analysis 31, no. 4s (2024): 572–85. http://dx.doi.org/10.52783/cana.v31.951.

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Bi-isotropic media (chiral and non-reciprocal) present an outstanding challenge for the scientific community. Their characteristics have facilitated the emergence of new and remarkable applications. In this paper, we focus on the novel effect of chirality, characterized through a newly proposed formalism, to highlight the nonlinear effect induced by the magnetization vector under the influence of a strong electric field. This research work is concerned with a new formulation of constitutive relations. We delve into the analysis and discussion of the family of solutions of the nonlinear Schrödi

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Heo, Jae Hee, and Young-Min Kang. "Synthesis, Characterization, and Electromagnetic Wave Absorbing Properties of La<sub>0.7</sub>Sr<sub>0.3</sub>MnO<sub>3</sub>." Korean Journal of Metals and Materials 61, no. 3 (2023): 183–89. http://dx.doi.org/10.3365/kjmm.2023.61.3.183.

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Perovskite manganese La<sub>0.7</sub>Sr<sub>0.3</sub>MnO<sub>3</sub> (LSMO) powders were prepared by sol-gel synthesis and calcination in the temperature (<i>T</i>) range of 500~1200 o C and their structures and electromagnetic (EM) wave absorption properties were investigated. X-ray diffraction (XRD) analysis revealed that the crystalline perovskite phase can be formed at <i>T</i> ≥ 600 <sup>o</sup>C. The average grain size was ~15 nm at the calcination temperature (T<sub>cal</sub>) = 600 <sup>o</sup&

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Bukhanko, A. F. "Magneto-optical properties of magnetic–ENZ–magnetic multilayer with noncollinear orientation of magnetizations of layers." Low Temperature Physics 51, no. 3 (2025): 316–22. https://doi.org/10.1063/10.0035814.

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The transmission and reflection of electromagnetic waves from the magnetic–“epsilon-near-zero”–magnetic multilayer with a noncollinear orientation of the magnetizations of layers lying in the plane of the film is considered. The analytical approach is based on exact solutions of electromagnetic boundary problems. The characteristic matrix of the structure that determines the magneto-optical properties of the structure is calculated. The magneto-optical characteristics of this structure are shown to significantly depend on the angle between the magnetization vectors of layers and the thickness

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Aghazadeh, Mustafa, Mohammad Reza Ganjali, Mina Mohebi Morad, and Davoud Gharailou. "Saccharide-capped Superparamagnetic Copper Cations-doped Magnetite Nanoparticles for Biomedical Applications: A Novel and Simple Synthesis Procedure, In-situ Surface Engineering and Characterization." Current Nanoscience 16, no. 5 (2020): 770–78. http://dx.doi.org/10.2174/1573413716666191220120718.

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Background: Recently, superparamagnetic and electromagnetic nano-materials have been extensively studied and their potential applications have also been investigated in various fields. In this regard, currently, Fe3O4 NPs are valuable candidates as diagnostic agents such as magnetic resonance imaging, enzyme immobilization, biosensing and cell labeling, and therapeutic probes, including drug delivery, bacteria detection, magnetic separation, and hyperthermia agents. Objective: In this study, electrochemical synthesis of Cu2+ cations-doped superparamagnetic magnetite nanoparticles (Cu-SMNPs) an

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Zhao, Xiaojun, Huawei Xu, Zhenbin Du, Yongjian Li, Lanrong Liu, and Zhigang Zhao. "Anisotropic Vector Hysteresis Simulation of Soft Magnetic Composite Materials Based on a Hybrid Algorithm of PSO–Powell." Materials 13, no. 14 (2020): 3138. http://dx.doi.org/10.3390/ma13143138.

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To simulate the anisotropic hysteresis characteristics of soft magnetic composite (SMC) materials accurately, an improved vector hysteresis model was proposed and utilized to adjust the shape of hysteresis curves by introducing two parameters. These two parameters are correlated with the amplitude of the vector Everett function and the projection of magnetic flux density along different directions. An experimental platform was built to measure the two-dimensional (2-D) magnetic properties of the SMC material under rotational magnetizations. The scalar and vector Everett functions were construc

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Luan, Pham Thanh, Le Huy Minh, Erdinc Oksum, and Do Duc Thanh. "Determination of maximum tilt angle from analytic signal amplitude of magnetic data by the curvature-based method." VIETNAM JOURNAL OF EARTH SCIENCES 40, no. 4 (2018): 354–66. http://dx.doi.org/10.15625/0866-7187/40/4/13106.

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Imaging buried geological boundaries is one of a major objective during the interpretation of magnetic field data in Geophysics. Therefore, edge detection and edge enhancement techniques assist a crucial role on this aim. Most of the existing edge detector methods require to obtain special points such as in general the maxima of the resulting image. One of the useful tools in estimating edges from magnetic data is the tilt angle of the analytical signal amplitude due to its value slightly dependence on the direction of magnetization. In this study, the maxima of the tilt angle of analytical si

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Vashkovskii, A. V., É. G. Lokk, and V. I. Shcheglov. "Hysteresis of the characteristics of magnetostatic waves in ferrite films with stripe domains whose magnetization vectors are oriented close to the plane of the film." Journal of Experimental and Theoretical Physics 87, no. 4 (1998): 776–87. http://dx.doi.org/10.1134/1.558721.

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Konstantinov, K. M., M. D. Tomshin, and M. S. Khoroshikh. "Magnetoelastic effect of kimberlite host rocks (Yakutsk diamondiferous province)." Earth sciences and subsoil use 46, no. 4 (2024): 344–63. http://dx.doi.org/10.21285/2686-9993-2023-46-4-344-363.

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The purpose of the research is to conduct petro- and paleomagnetic studies of Early Paleozoic rocks of the carbonate basement of a number of diamond deposits in the Yakutsk diamondiferous province in order to study the changes in petrophysical parameter values in the dynamic influence zone of a kimberlite pipe. It is shown that the formation of kimberlite diatremes accompanied by pulsating explosions shifting upwards brings about thermoelastic stress fields in the kimberlite-bearing medium, which are characterized by epigenetic changes and associated petrophysical heterogeneities (petrophysica

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Masrochah, Siti, Fatimah Fatimah, and Nurdianty Yunitaningrum. "Analisa Informasi Citra MRI Cervical Potongan Sagital Pada Variasi Nilai Time Repetition (TR) Dengan Sekuens Short Tau Inversion Recovery (STIR)." Jurnal Imejing Diagnostik (JImeD) 6, no. 2 (2020): 79–85. http://dx.doi.org/10.31983/jimed.v6i2.5822.

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Background: One of MRI technique using STIR sequences, such as the cervical examination. STIR sequences used in the cervical spine due to the cervical spine is surrounded by lots of fluids and fat, to reinforce the picture of the cervical spine. According to Braun in 2003 in an article in the American College of Rheumatology, TR on STIR used is 4000 ms. Meanwhile, according to Erika J. Ulbribh in 2011 in an article in the Journal of Magnetic Resonance Imaging TR on STIR sequences were used that 4860 ms. Based on the writer's observation in several hospitals with the same flight characteristics

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Xie, Rukuan, Shengqing Xiong, Shuling Duan, et al. "Using airborne vector magnetic data to calculate the projection of magnetic anomaly vector onto normal geomagnetic field." GEOPHYSICS, August 31, 2021, 1–47. http://dx.doi.org/10.1190/geo2020-0582.1.

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The total-field magnetic anomaly [Formula: see text] is an approximation of the projection [Formula: see text] of the magnetic anomaly vector [Formula: see text] onto the normal geomagnetic field [Formula: see text]. However, for highly magnetic sources, the approximation error of [Formula: see text] cannot be ignored. To reduce the error, we have developed a method for calculating [Formula: see text] by using airborne vector magnetic data based on the vector relationship of geomagnetic field [Formula: see text]. The calculation uses the magnitude of the vectors [Formula: see text], [Formula:

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Vlasov, V. S., V. G. Shavrov, and V. I. Shcheglov. "Spectral characteristics of equilibrium position precession of magnetization in normal magnetized ferrite plate." Journal of Radio Electronics 2021, no. 3 (2021). http://dx.doi.org/10.30898/1684-1719.2021.3.2.

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The investigation of spectral characteristics of precession equilibrium balance position of magnetization is the main subject of this work. The geometry of task is normal magnetized ferrite plate. In this case the parametrical excitation of exchange spin waves is not possible and the angle of precession cone may be about some tens of degree. It is established that in the condition of orientational transition the switching of alternating magnetic field having circular polarization leads to precession of equilibrium position of magnetization. In this case the magnetization vector takes part in t

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Zuo, Boxin, Xiangyun Hu, Lizhe Wang, Yi Cai, and Mason Andrew Kass. "Three‐Dimensional Unstructured Magnetization Vector Inversion and Modeling of Planetary Equivalent Toroidal Currents for Earth’s Magnetic Field Analysis." Journal of Geophysical Research: Solid Earth 130, no. 1 (2024). https://doi.org/10.1029/2024jb029224.

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AbstractThis study introduces a pioneering methodology for modeling the Earth’s geomagnetic field, departing from traditional reliance on current loops by employing a three‐dimensional (3‐D) geometric equivalent toroidal current source. We propose a 3‐D unstructured magnetization vector inversion method aimed at inverting the geomagnetic vector field data set to construct an equivalent magnetization source. Subsequently, this constructed source is utilized to solve for the distribution of equivalent toroidal currents. Our objective is to elucidate and analyze potential distributions of toroida

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Wang, Yaqi, Lin Li, Xiaojun Zhao, and Jia’an Sun. "Analysis of DC bias characteristics of transformer by using fixed-point time-step FEM and dynamic J–A hysteresis model." AIP Advances 14, no. 3 (2024). http://dx.doi.org/10.1063/5.0198477.

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The injection of the Direct Current (DC) bias component will lead to oversaturation of the transformer core and affect its safe operation. In this paper, the vector magnetic potential A and winding current I are used as the variables solved in the time-step finite element method to simulate the nonlinear transient magnetization characteristics of the transformer under DC bias, and the fixed-point reluctivity is introduced to deal with the nonlinear iterative problem. The field-circuit coupling relationship is established through the electromagnetic induction law, and the two-dimensional time-s

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Devescovi, Chiara, Mikel García-Díez, Iñigo Robredo, et al. "Cubic 3D Chern photonic insulators with orientable large Chern vectors." Nature Communications 12, no. 1 (2021). http://dx.doi.org/10.1038/s41467-021-27168-w.

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AbstractTime Reversal Symmetry (TRS) broken topological phases provide gapless surface states protected by topology, regardless of additional internal symmetries, spin or valley degrees of freedom. Despite the numerous demonstrations of 2D topological phases, few examples of 3D topological systems with TRS breaking exist. In this article, we devise a general strategy to design 3D Chern insulating (3D CI) cubic photonic crystals in a weakly TRS broken environment with orientable and arbitrarily large Chern vectors. The designs display topologically protected chiral and unidirectional surface st

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