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Journal articles on the topic 'Magnetic curves'

Author: Grafiati

Published: 3 June 2025

Last updated: 31 July 2025

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1

Saad, M. Khalifa, H. S. Abdel-Aziz, and Haytham A. Ali. "On Magnetic Curves According to Killing Vector Fields in Euclidean 3-Space." International Journal of Analysis and Applications 20 (March 18, 2022): 18. http://dx.doi.org/10.28924/2291-8639-20-2022-18.

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In the geometric theory of space curves, a magnetic field generates magnetic flow. The trajectories of magnetic flow are called magnetic curves. In the present paper, we obtain magnetic curves corresponding to killing magnetic fields in Euclidean 3-space E3. The magnetic curves of the spherical indicatrices of the tangent, principal normal and binormal for a regular space curve are said to be meant curves. Also, we investigate the magnetic curves of the tangent indicatrix and obtain the trajectories of the magnetic fields called TT-magnetic, NT-magnetic and BT-magnetic curves. Finally, some co

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2

PARLAK, ESRA, and TEVFİK ŞAHİN. "GEOMETRIC PERSPECTIVE OF BERRY'S PHASE ACCORDING TO ALTERNATIVE ORTHOGONAL MODIFIED FRAME." Journal of Science and Arts 25, no. 1 (2025): 11–24. https://doi.org/10.46939/j.sci.arts-25.1-a02.

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It is very important to determine the Frenet vector fields to obtain the characterizations of curves in 3-dimensional Euclidean space. However, it may not be possible to define Frenet vector fields at some points of the curve, or the Frenet frame may not be sufficient to determine the curve's characterization. New frames can be defined as alternatives to the Frenet frame in these situations. Lots of work has been done for these cases such as Bishop frame, {d_2,C,W}- frame, orthogonal frame, etc. In this study, we produce the magnetic curves related to an alternative modified frame that can be

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3

Chen, Xiawei, та Haiming Liu. "Two Special Types of Curves in Lorentzian α-Sasakian 3-Manifolds". Symmetry 15, № 5 (2023): 1077. http://dx.doi.org/10.3390/sym15051077.

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In this paper, we focus on the research and analysis of the geometric properties and symmetry of slant curves and contact magnetic curves in Lorentzian α-Sasakian 3-manifolds. To do this, we define the notion of Lorentzian cross product. From the perspectives of the Legendre and non-geodesic curves, we found the ratio relationship between the curvature and torsion of the slant curve and contact magnetic curve in the Lorentzian α-Sasakian 3-manifolds. Moreover, we utilized the property of the contact magnetic curve to characterize the manifold as Lorentzian α-Sasakian and to find the slant curv

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Shweta, Naik, та G.Nagaraja H. "Pseudo-Hermitian Magnetic Curves in (Κ, µ) Manifold". INTERNATIONAL JOURNAL OF MATHEMATICS AND COMPUTER RESEARCH 10, № 09 (2022): 2880–85. https://doi.org/10.5281/zenodo.7043251.

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Object of the present paper is to study pseudo Hermitian magnetic curves in (κ,µ) manifold admitting Zamkovoy connection. We give main classification theorem for pseudo-Hermitian magnetic curve. Again we find the curvature and torsion of magnetic curves in a (κ,µ)-manifold admitting Zamkovoy connection.

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Erjavec, Zlatko, and Jun-ichi Inoguchi. "Magnetic curves in Sol3." Journal of Nonlinear Mathematical Physics 25, no. 2 (2018): 198–210. http://dx.doi.org/10.1080/14029251.2018.1452670.

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6

Körpınar, Talat, and Ridvan Cem Demirkol. "Gravitational magnetic curves on 3D Riemannian manifolds." International Journal of Geometric Methods in Modern Physics 15, no. 11 (2018): 1850184. http://dx.doi.org/10.1142/s0219887818501840.

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In this paper, we study a special type of magnetic trajectories associated with a magnetic field [Formula: see text] defined on a 3D Riemannian manifold. First, we assume that we have a moving charged particle which is supposed to be under the action of a gravitational force [Formula: see text] in the magnetic field [Formula: see text] on the 3D Riemannian manifold. Then, we determine trajectories of the charged particle associated with the magnetic field [Formula: see text] and we define gravitational magnetic curves ([Formula: see text]-magnetic curves) of the magnetic vector field [Formula:

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7

Wo, Mei Seen, R. U. Gobithaasan, and Kenjiro T. Miura. "Log-Aesthetic Magnetic Curves and Their Application for CAD Systems." Mathematical Problems in Engineering 2014 (2014): 1–16. http://dx.doi.org/10.1155/2014/504610.

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Curves are the building blocks of shapes and designs in computer aided geometric design (CAGD). It is important to ensure these curves are both visually and geometrically aesthetic to meet the high aesthetic need for successful product marketing. Recently, magnetic curves that have been proposed for computer graphics purposes are a particle tracing technique that generates a wide variety of curves and spirals under the influence of a magnetic field. The contributions of this paper are threefold, where the first part reformulates magnetic curves in the form of log-aesthetic curve (LAC) denoting

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8

Özdemi̇r, Zehra. "Pseudo null curve variations for Bishop frame in 3D semi-Riemannian manifold." International Journal of Geometric Methods in Modern Physics 16, no. 03 (2019): 1950043. http://dx.doi.org/10.1142/s0219887819500439.

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In the present paper, the relation between invariants of the pseudo null curves and the variational vector fields of semi-Riemannian manifolds is introduced. After that, the Killing equations are written in terms of the Bishop curvatures along the pseudo null curve. By means of this approach, Killing equations make allow to interpret the movement of charged particles within the magnetic field. Afterwards, as an application, pseudo null magnetic curves are defined using the Killing variational vector field. The parametric representations of all pseudo null magnetic curves are determined in semi

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9

Güvenç, Şaban, and Cihan Özgür. "Magnetic Curves in Homothetic s-th Sasakian Manifolds." Mathematics 13, no. 1 (2025): 159. https://doi.org/10.3390/math13010159.

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We investigate normal magnetic curves in (2n+s)-dimensional homothetic s-th Sasakian manifolds as a generalization of S-manifolds. We show that a curve γ is a normal magnetic curve in a homothetic s-th Sasakian manifold if and only if its osculating order satisfies r≤3 and it belongs to a family of θi-slant helices. Additionally, we construct a homothetic s-th Sasakian manifold using generalized D-homothetic transformations and present the parametric equations of normal magnetic curves in this manifold.

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10

He, Han, Huaning Wang, Mei Zhang, Ahmad Mehrabi, Yan Yan, and Duo Yun. "Phase difference between long-term magnetic feature activity and flare activity of solar-type stars." Proceedings of the International Astronomical Union 13, S340 (2018): 217–20. http://dx.doi.org/10.1017/s1743921318000960.

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AbstractIn the light curves of some solar-type stars, both rotational modulation (caused by corotating bright or dark magnetic features) and flare phenomena can be seen simultaneously. Based on these light curve observations, the relation between stellar magnetic feature activity (reflected by the rotational modulation component of the light curves) and flare activity can be investigated. Here, we analyze the light curve data of a flare-abundant solar-type star, KIC 6034120, observed with Kepler space telescope, and describe magnetic feature activity property by fluctuation range of light curv

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11

Ahmet, Kazan, and Bayram Karadag H. "Magnetic Curves According to Bishop Frame and Type-2 Bishop Frame in Euclidean 3-Space." British Journal of Mathematics & Computer Science 22, no. 4 (2017): 1–18. https://doi.org/10.9734/BJMCS/2017/33330.

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In this paper, we define the notions of <em>T</em>-magnetic, <em>N<sub>1</sub></em>-magnetic, <em>N<sub>2</sub></em>-magnetic curves according to Bishop frame and ξ<sub>1</sub>-magnetic, ξ<sub>2</sub>-magnetic, <em>B</em>-magnetic curves according to type-2 Bishop frame in Euclidean 3-space. Also, we obtain the magnetic vector field <em>V</em> when the curve is <em>T</em>-magnetic, <em>N<sub>1</sub></em>-magnetic,<em> N<sub>2</sub></em>-magnetic trajectory of <em>V</em> according to Bishop frame and ξ<sub>1</sub>-magnetic, ξ<sub>2</sub>-magnetic, <em>B</em>-magnetic trajectory of <em>V </em>ac

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12

Lee, Ji-Eun. "Slant Curves and Contact Magnetic Curves in Sasakian Lorentzian 3-Manifolds." Symmetry 11, no. 6 (2019): 784. http://dx.doi.org/10.3390/sym11060784.

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In this article, we define Lorentzian cross product in a three-dimensional almost contact Lorentzian manifold. Using a Lorentzian cross product, we prove that the ratio of κ and τ − 1 is constant along a Frenet slant curve in a Sasakian Lorentzian three-manifold. Moreover, we prove that γ is a slant curve if and only if M is Sasakian for a contact magnetic curve γ in contact Lorentzian three-manifold M. As an example, we find contact magnetic curves in Lorentzian Heisenberg three-space.

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13

Dwivedi, Gopeshwar Dhar, Manish Kumar, Prashant Shahi, Anjan Barman, Sandip Chatterjee, and Anup K. Ghosh. "Low temperature magnetic and transport properties of LSMO–PZT nanocomposites." RSC Advances 5, no. 39 (2015): 30748–57. http://dx.doi.org/10.1039/c5ra04101e.

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(a) M–H curves of different nanocomposites (NCs) at 80 K. Left and right insets show M vs. H and dM/dH vs. H curves respectively; (b) Magneto-resistance (MR) vs. H curve of different NCs at 200 K. Inset figure shows MR vs. H curve for a typical NC at various temperatures.

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14

Druţă-Romaniuc, Simona Luiza, Jun-ichi Inoguchi, Marian Ioan Munteanu, and Ana Irina Nistor. "Magnetic curves in Sasakian manifolds." Journal of Nonlinear Mathematical Physics 22, no. 3 (2015): 428–47. http://dx.doi.org/10.1080/14029251.2015.1079426.

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15

Druţă-Romaniuc, Simona-Luiza, Jun-ichi Inoguchi, Marian Ioan Munteanu, and Ana Irina Nistor. "Magnetic Curves in Cosymplectic Manifolds." Reports on Mathematical Physics 78, no. 1 (2016): 33–48. http://dx.doi.org/10.1016/s0034-4877(16)30048-9.

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16

Inoguchi, Jun-ichi, and Marian Ioan Munteanu. "Killing submersions and magnetic curves." Journal of Mathematical Analysis and Applications 520, no. 2 (2023): 126889. http://dx.doi.org/10.1016/j.jmaa.2022.126889.

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17

He, Han, Huaning Wang, Yan Yan, and Duo Yun. "Magnetic Activity Discrepancies of Solar-Type Stars Revealed by Kepler Light Curves." Proceedings of the International Astronomical Union 13, S335 (2017): 7–10. http://dx.doi.org/10.1017/s1743921317007670.

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AbstractMagnetic activity information is concealed in the shape of stellar light curves owing to the process of rotational modulation. We developed approaches to extract magnetic activity characteristics from stellar light curves, and applied the method to a solar-type star observed with Kepler space telescope and also to the Sun for comparison. The result reveals distinct magnetic activity discrepancies between the solar-type star and the Sun. (1) The light-curve periodicity of the solar-type star is generally stronger than that of the Sun. (2) For the solar-type star, when the range of light

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18

Sun, Jianguo. "Singularity properties of null killing magnetic curves in Minkowski 3-space." International Journal of Geometric Methods in Modern Physics 17, no. 09 (2020): 2050141. http://dx.doi.org/10.1142/s0219887820501418.

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We reconstruct the Cartan Equations of null Killing magnetic curve [Formula: see text] in [Formula: see text] with Killing magnetic vector field [Formula: see text] under the new Cartan frame [Formula: see text], which describe some new geometrical properties of [Formula: see text]. The singularity properties of the rectifying surfaces and the binormal osculating surfaces of null Killing magnetic curves are given. As an application, two examples are given to explain the main results, where the singular loci of null Killing magnetic curves are obtained.

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19

Bejan, Cornelia-Livia, Tran Binh, and Simona-Luiza Druţă-Romaniuc. "Magnetic Frenet curves on para-Sasakian manifolds." Filomat 37, no. 5 (2023): 1479–96. http://dx.doi.org/10.2298/fil2305479b.

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The study of magnetic curves, seen as solutions of Lorentz equation, has been done mainly in 3-dimensional case, motivated by theoretical physics. Then it was extended in higher dimensions, as for instance in K?hlerian or Sasakian frame. This paper deals for the first time in literature with magnetic Frenet curves in higher dimensional paracontact context. Several classifications are provided here for different types of magnetic curves on para-Sasakian manifolds. Some relations between magnetic Frenet curves and Lorenz force are obtained on these spaces and examples of magnetic curves associat

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20

Cao, Jian Nan, Jun Liu, and Yong Yang. "Impact Characteristics Study on Electromagnet Magnetic Isolation Ring to Electromagnetic Force." Applied Mechanics and Materials 201-202 (October 2012): 635–39. http://dx.doi.org/10.4028/www.scientific.net/amm.201-202.635.

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This paper makes simulation analysis on an electromagnetic valve product based on ANSYS software by changing the angle, position, length and permeability of electromagnet magnetic isolation ring, and get different electromagnetic force curves. According to electromagnetic force curves, it can verify the importance of magnetic isolation ring’s existence. Comparing simulation results curve with measured electromagnetic force curve, it can find that Attenuation trend of two curves are consistent, which can prove the reliability of simulation by ANSYS software. This study makes a series of electro

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21

Camcı, Çetin. "Constructing $k$-Slant Curves in Three Dimensional Euclidean Spaces." Journal of New Theory, no. 50 (March 28, 2025): 98–115. https://doi.org/10.53570/jnt.1647509.

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Helices and constant procession curves are special examples of slant curves. However, there is no example of a $k$-slant curve for a positive integer $k\geq 2$ in three dimensional Euclidean spaces. Furthermore, the position vector of a $k$-slant curve for a positive integer $k\geq 2$ has not been known thus far. In this paper, we propose a method for constructing $k$-slant curves in three dimensional Euclidean spaces. We then show that spherical $k$-slant curves and $N_{k}$-constant procession curves can be derived from circles, for $k \in \mathbb{N}$, the set of all nonnegative integers. In

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22

Nikitin, L. V., A. A. Gladkov, and A. E. Korovushkin. "Magnetic Properties of Magnetic Hydrogels." Solid State Phenomena 233-234 (July 2015): 310–13. http://dx.doi.org/10.4028/www.scientific.net/ssp.233-234.310.

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Several samples of magnetic hydrogels (also known as ferrogels) are prepared, and their magnetic properties are examined. Polyacrylamide gel is used as the base. Gel matrices are filled with the nanopowder: iron particles with the mean size about 30 nm. The magnetization curves of the samples are measured at different stages of de-swelling. The dependencies of such parameters of magnetization curves as coercive field, remanent magnetization from concentration of magnetic particles in the sample along the process of drying were investigated.

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Korpinar, Talat, and Ridvan Cem Demirkol. "Frictional magnetic curves in 3D Riemannian manifolds." International Journal of Geometric Methods in Modern Physics 15, no. 02 (2018): 1850020. http://dx.doi.org/10.1142/s0219887818500202.

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In this study, we investigate the special type of magnetic trajectories associated with a magnetic field [Formula: see text] defined on a 3D Riemannian manifold. First, we consider a moving charged particle under the action of a frictional force, [Formula: see text], in the magnetic field [Formula: see text]. Then, we assume that trajectories of the particle associated with the magnetic field [Formula: see text] correspond to frictional magnetic curves ([Formula: see text]-magnetic curves[Formula: see text] of magnetic vector field [Formula: see text] on the 3D Riemannian manifold. Thus, we ar

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Mihaela, Zlatko Erjavec, and Damjan Klemenčić. "On Killing Magnetic Curves in the Hyperboloid Model of $\widetilde{\mathrm{SL}}(2,\mathbb{R})$ Geometry." Sarajevo Journal of Mathematics 20, no. 2 (2025): 291–307. https://doi.org/10.5644/sjm.20.02.11.

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A Killing magnetic curve is a trajectory of a charged particle on a Riemannian manifold under the action of a Killing magnetic field. In this paper we study Killing magnetic curves in the hyperboloid model of $\widetilde{\mathrm{SL}}(2,\mathbb{R})$ geometry.

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ÖZDEMİR, Zehra, İsmail GÖK, and F. Nejat EKMEKCİ. "A Geometric view of Magnetic Surfaces and Magnetic Curves." International Electronic Journal of Geometry 12, no. 1 (2019): 126–34. http://dx.doi.org/10.36890/iejg.545865.

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Druţă-Romaniuc, Simona Luiza, and Marian Ioan Munteanu. "Magnetic curves corresponding to Killing magnetic fields in E3." Journal of Mathematical Physics 52, no. 11 (2011): 113506. http://dx.doi.org/10.1063/1.3659498.

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27

Dal, H. A., E. Sipahi, and O. Özdarcan. "High-Level Magnetic Activity on a Low-Mass Close Binary: GSC 02038-0293." Publications of the Astronomical Society of Australia 29, no. 2 (2012): 150–60. http://dx.doi.org/10.1071/as12007.

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AbstractTaking into account results obtained from light-curve analysis and out-of-eclipse analyses, we discuss the nature of GSC 02038-00293 and also its magnetic activity behaviour.We obtained light curves of the system during observing seasons 2007, 2008 and 2011. We obtained its secondary minimum clearly in I-band observations in 2008 for the first time. Analysing this light curve, we found the physical parameters of the components. The light-curve analysis indicates that the possible mass ratio of the system is 0.35. We obtained the remaining V-band light curves, extracting the eclipses. W

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28

Jurayeva, Kamila. "INVESTIGATION OF MAGNETIC CIRCUITS OF A MAGNETOELASTIC CONVERTER WITH MAGNETIC FIELDS OF VARIOUS FREQUENCIES." International Journal of Advanced Logistics, Transport and Engineering 2, no. 2 (2022): 20–25. http://dx.doi.org/10.52167/2790-5829-2022-2-2-20-25.

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The article is devoted to the study of magnetic circuits of a magnetoelastic converter, the principle of operation of which is based on the magnetomodulation effect. A mathematical expression of the magnetization curve of the magnetic circuit of a magnetoelastic converter is obtained when magnetized by magnetic fields of various frequencies (direct and alternating) currents. The influence of the variable and constant components of magnetic induction on the nature of the magnetization curve is estimated. The obtained magnetization curves of a magnetic circuit with longitudinal modulation and th

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29

Inoguchi, Jun-ichi, and Marian Ioan Munteanu. "Periodic magnetic curves in Berger spheres." Tohoku Mathematical Journal 69, no. 1 (2017): 113–28. http://dx.doi.org/10.2748/tmj/1493172131.

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Heslop, D., and M. Dillon. "Unmixing magnetic remanence curves withouta prioriknowledge." Geophysical Journal International 170, no. 2 (2007): 556–66. http://dx.doi.org/10.1111/j.1365-246x.2007.03432.x.

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31

Inoguchi, Jun-ichi, and Marian Ioan Munteanu. "Magnetic curves on tangent sphere bundles." Revista de la Real Academia de Ciencias Exactas, Físicas y Naturales. Serie A. Matemáticas 113, no. 3 (2018): 2087–112. http://dx.doi.org/10.1007/s13398-018-0600-2.

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Munteanu, Marian Ioan, and Ana Irina Nistor. "A note on magnetic curves on." Comptes Rendus Mathematique 352, no. 5 (2014): 447–49. http://dx.doi.org/10.1016/j.crma.2014.03.006.

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Bejan, Cornelia-Livia, and Simona-Luiza Druţă-Romaniuc. "Walker manifolds and Killing magnetic curves." Differential Geometry and its Applications 35 (September 2014): 106–16. http://dx.doi.org/10.1016/j.difgeo.2014.03.001.

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DE OLIVEIRA, GUSTAVO. "ASYMPTOTICS FOR FERMI CURVES: SMALL MAGNETIC POTENTIAL." Reviews in Mathematical Physics 22, no. 08 (2010): 881–961. http://dx.doi.org/10.1142/s0129055x10004107.

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We consider complex Fermi curves of electric and magnetic periodic fields. These are analytic curves in ℂ2 that arise from the study of the eigenvalue problem for periodic Schrödinger operators. We characterize a certain class of these curves in the region of ℂ2 where at least one of the coordinates has "large" imaginary part. The new results in this work extend previous results in the absence of magnetic field to the case of "small" magnetic field. Our theorems can be used to show that generically these Fermi curves belong to a class of Riemann surfaces of infinite genus.

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Sariaydin, Muhammed Talat. "On Energies of Charged Particles with Magnetic Field." Symmetry 11, no. 10 (2019): 1204. http://dx.doi.org/10.3390/sym11101204.

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The present paper is about magnetic curves of spherical images in Euclidean 3-space. We obtain the Lorentz forces of the spherical images and then we determine if the spherical images have a magnetic curve or not. If a spherical image has a magnetic curve, then after presenting some basic concepts about the energy of a charged particle whose trajectory is that magnetic curve and the kinetic energy of a moving particle whose trajectory is the spherical indicatrix, we find the energy of the charged particle and the kinetic energy of the moving particle.

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Sun, Jianguo. "Singularity properties of killing magnetic curves in Minkowski 3-space." International Journal of Geometric Methods in Modern Physics 16, no. 08 (2019): 1950123. http://dx.doi.org/10.1142/s0219887819501238.

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We define the coordinate equations of killing magnetic curves [Formula: see text] in [Formula: see text] with the magnetic vector field [Formula: see text] under the frame [Formula: see text]. In particular, this yields to describe the geometrical properties and singularities of the magnetic curves and the magnetic normal binormal surfaces. Meanwhile, we establish the relationships between singularity types of the magnetic normal binormal surfaces and geometrical invariants of the magnetic curves. As an application, we give an example to explain the main results in this paper, where we give th

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Sampaio da Silva, Fernanda A., and Marcos Flavio de Campos. "A Model for the Hysteresis Curves of Soft Magnetic Materials." Materials Science Forum 727-728 (August 2012): 130–34. http://dx.doi.org/10.4028/www.scientific.net/msf.727-728.130.

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A model, based on hyperbolic tangent curve, was found to be able to reproduce several different types of magnetization curves of soft magnetic materials. The model is especially suitable for curves with sigmoid shape. The model is compared with experimental data for bonded soft iron powders, and also other ferromagnetic materials (1045 steel). Three adjusting parameters were used in the original hyperbolic tangent equation. Each parameter has different physical meaning.

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Manogaran, Praveena, Irene Vavasour, Michael Borich, et al. "Corticospinal tract integrity measured using transcranial magnetic stimulation and magnetic resonance imaging in neuromyelitis optica and multiple sclerosis." Multiple Sclerosis Journal 22, no. 1 (2015): 43–50. http://dx.doi.org/10.1177/1352458515579441.

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Background: Both multiple sclerosis (MS) and neuromyelitis optica (NMO) can present with transverse myelitis; however, NMO symptoms are usually more severe and may present with more extensive axonal loss. Transcranial magnetic stimulation (TMS)-based input–output recruitment curves can quantitatively assess the excitability of corticospinal tract pathways and myelin water imaging can quantify the amount of myelin within this same pathway. Objective: To compare differential effects of MS and NMO on TMS recruitment curves and myelin water imaging. Methods: Ten healthy controls, 10 individuals wi

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Sharshar, Tarek, Ewen Ross, Nicholas S. Hopkinson, et al. "Effect of voluntary facilitation on the diaphragmatic response to transcranial magnetic stimulation." Journal of Applied Physiology 95, no. 1 (2003): 26–34. http://dx.doi.org/10.1152/japplphysiol.00918.2002.

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We assessed recruitment curves of the surface diaphragm motor-evoked potential (MEP) after transcranial magnetic stimulation during relaxation and at three different levels of facilitation (20, 40, and 60% of maximal inspiratory esophageal pressure) in 10 healthy subjects (six young and four elderly). MEP amplitude recruitment curves varied between individuals during relaxation and at each level of facilitation. Amplitude recruitment curves during relaxation were reproducible in individual subjects. Inspiratory maneuvers caused a decrease in motor threshold and latency and an increase in MEP a

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Kelekçi, Özgür. "Kähler Magnetic Curves in Conformally Euclidean Schwarzschild Space." Cumhuriyet Science Journal 45, no. 1 (2024): 147–52. http://dx.doi.org/10.17776/csj.1400543.

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In this paper, we study the magnetic curves on a Kähler manifold which is conformally equivalent to Euclidean Schwarzschild space. We show that Euclidean Schwarzschild space is locally conformally Kähler and transform it into a Kähler space by applying a conformal factor coming from its Lee form. We solve Lorentz equation to find analytical expressions for magnetic curves which are compatible with the almost complex structure of the proposed Kähler manifold. We also calculate the energy of magnetic curves.

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Korpinar, Talat, and Selçuk Baş. "A new approach for inextensible flows of binormal spherical indicatrices of magnetic curves." International Journal of Geometric Methods in Modern Physics 16, no. 02 (2019): 1950020. http://dx.doi.org/10.1142/s0219887819500208.

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In this study, we obtain the special type of magnetic trajectories associated with a magnetic field [Formula: see text] defined on a 3D Riemannian manifold. We investigate a new representation of binormal spherical indicatrices of magnetic curves. Thus, we study [Formula: see text]-magnetic curves terms of inextensible flows. Furthermore, we give some new characterizations of curvatures in terms of some partial differential equations. Finally, we examine some geometrical and physical features of the moving charged particle corresponding to the [Formula: see text]-magnetic curves. Namely, we co

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Yoneda, M., S. Obata, M. Niwa, and M. Motohashi. "Temperature Dependence of the Magnetic Hysteresis Curves in Magnetic Multilayers." MATERIALS TRANSACTIONS 58, no. 5 (2017): 716–19. http://dx.doi.org/10.2320/matertrans.m2016348.

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Dong, Jiahao, Yifan Hu, Bingrui Su, et al. "A Novel Method of Flow Curve Measurement for Magnetic Fluid Based on Plane Poiseuille Flow." Magnetochemistry 8, no. 9 (2022): 98. http://dx.doi.org/10.3390/magnetochemistry8090098.

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Accurate measurement of the flow curves of magnetic fluid under a uniform field has always been a challenge. In this article, a novel method is proposed to measure the flow curve of magnetic fluids based on plane Poiseuille flow. The measuring system was built and its performance was compared with that of a commercial rheometer. Flow curves of magnetic fluid with different zero-field viscosity were tested under various field strengths. This novel method facilitates direct observation of the flowing behaviors of magnetic fluid under different stresses. By examining the variation trend of viscos

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Lebedev, A. V. "On the unsuitability of a vibrating sample magnetometer for measuring the magnetization curves of magnetic fluids." ВЕСТНИК ПЕРМСКОГО УНИВЕРСИТЕТА. ФИЗИКА, no. 2 (2022): 20–25. http://dx.doi.org/10.17072/1994-3598-2022-2-20-25.

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The magnetization curves of magnetic fluid samples were measured using a vibrating sample magnetometer (VSM) and the differential run method. For standard magnetic fluids, the VSM gives significantly underestimated values of magnetization. In the case of a solid sample of a magnetic fluid based on epoxy resin, there is a complete coincidence of the magnetization curves obtained by the two measurement methods. The last experiment was performed with a styrene-based sample. It was initially measured with the use of the VSM in a liquid state. Then the sample was polymerized (without being removed

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Bozdağ, Şerife Nur. "A study on magnetic curves in trans-Sasakian manifolds." Analele Universitatii "Ovidius" Constanta - Seria Matematica 31, no. 3 (2023): 47–60. https://doi.org/10.2478/auom-2023-0031.

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Abstract In this paper, we focused on biharmonic, f-harmonic and f-biharmonic magnetic curves in trans-Sasakian manifolds. Moreover, we obtain necessary and su cient conditions for magnetic curves as well as Legendre magnetic curves to be biharmonic, f-harmonic and f-biharmonic. We investigate the states of these conditions in α-Sasakian, β-Kenmotsu and cosymplectic manifolds. Besides, we obtain some nonexistence theorems.

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Derkaoui, Khadidja, and Fouzi Hathout. "Explicit formulas for Killing magnetic curves in three-dimensional Heisenberg group." International Journal of Geometric Methods in Modern Physics 18, no. 09 (2021): 2150135. http://dx.doi.org/10.1142/s0219887821501358.

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In this paper, we present the geometry of three-dimensional Heisenberg group [Formula: see text] and its geodesics curves. After studying the Killing magnetic curves and some geodesic Killing magnetic curves, we give the explicit formulas for such curves.

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Baş, Selçuk. "A New Version of Spherical Magnetic Curves in the De-Sitter Space S 1 2." Symmetry 10, no. 11 (2018): 606. http://dx.doi.org/10.3390/sym10110606.

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This paper presents a new type of spacelike magnetic curves associated with the Sabban vector field defined in the Minkowski space. In this approach, some geometrical and physical features of the moving charged particle corresponding to the spacelike magnetic curves are identified. An entire characterization is developed for spacelike spherical magnetic curves, denoting particularly the changes of their energy with respect to time, the influence of the magnetic force on them, and the existence condition for the uniformity of these curves.

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Bychkov, V. D., L. V. Bychkova, and J. Madej. "Catalog of averaged magnetic phase curves of stars." Astronomy & Astrophysics 652 (August 2021): A31. http://dx.doi.org/10.1051/0004-6361/202040215.

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Some stars show variability of the longitudinal components of their global magnetic fields, mainly resulting from rotation. Recently, a lot of new observational data have accumulated for various types of stars. To summarize information about magnetic variability, we present the second version of the catalog of average magnetic phase curves. The curves are obtained from literary data and as a result of observations from SAO RAS telescopes. A total of 357 stars of various spectral types were studied based on data that was published before the end of August 2020. Magnetic Ap and Bp stars make up

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Zhong, Qian, Hong-Bang Liu, Kangfa Cheng, et al. "Polarization Evolution of Gamma-Ray Burst Prompt Emission with Bulk Acceleration." Astrophysical Journal 986, no. 1 (2025): 32. https://doi.org/10.3847/1538-4357/add0ac.

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Abstract During the prompt phase, Poynting-flux-dominated jets undergo acceleration accompanied by magnetic dissipation. By using an outward-propagating thin-shell model, where bulk Lorentz factors Γ increase with radius and the magnetic field strength decay is related to the acceleration and the energy conversion rate, this process can be investigated through time-resolved polarization analysis. Faster acceleration produces a greater flux, steeper light-curve growth followed by a sharper decline, and polarization degree decreases sharply. With a fixed acceleration index, lower energy conversi

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Ban, Chun Yan, Peng Qian, Xu Zhang, Qi Xian Ba, and Jian Zhong Cui. "Effect of Magnetic Fields on the Resistance and Microstructure of Al-Cu Alloy during Solidification Processing." Advanced Materials Research 287-290 (July 2011): 2916–20. http://dx.doi.org/10.4028/www.scientific.net/amr.287-290.2916.

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The resistance of Al-21%Cu alloy under no magnetic field, DC magnetic field and AC magnetic field from liquid to solid was measured by a four-probe method. The difference of resistance versus temperature curves (R-T curves) was analyzed. It is found that the R-T curves of Al-21%Cu alloy are monotone decreasing and have two obvious turning points. Under DC magnetic field, the liquidus and solidus temperatures of the alloy both decrease, while under AC magnetic field, the liquidus and solidus temperatures both increase. There is a good agreement between the microstructure of quenching sample and

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