Relevant bibliographies by topics / Magnetic current

Academic literature on the topic 'Magnetic current'

Author: Grafiati
Published: 10 December 2022
Last updated: 28 January 2023

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Journal articles on the topic "Magnetic current"

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Kravchuk, V. P. "Stability of Magnetic Nanowires Against Spin-Polarized Current." Ukrainian Journal of Physics 59, no. 10 (October 2014): 1001–6. http://dx.doi.org/10.15407/ujpe59.10.1001.

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Demchenko, V. F., I. V. Krivtsun, I. V. Krikent, and I. V. Shuba. "Force interaction of arc current with self-magnetic field." Paton Welding Journal 2017, no. 3 (March 28, 2017): 15–24. http://dx.doi.org/10.15407/tpwj2017.03.03.

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Volkov, O. M., and V. P. Kravchuk. "Saturation of Magnetic Films with Spin-Polarized Current in the Presence of a Magnetic Field." Ukrainian Journal of Physics 58, no. 7 (July 2013): 666–72. http://dx.doi.org/10.15407/ujpe58.07.0666.

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Vallett, Dave. "Magnetic Current Imaging Revisited." EDFA Technical Articles 16, no. 4 (November 1, 2014): 26–34. http://dx.doi.org/10.31399/asm.edfa.2014-4.p026.

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Abstract Magnetic current imaging provides electrical fault isolation for shorts, leakage currents, resistive opens, and complete opens. In addition, it can be performed nondestructively from either side a die, wafer, packaged IC, or PCB. This article reviews the basic theory and attributes of MCI, describes the types of sensors used, and discusses general measurement procedures. It also presents application examples demonstrating recent advancements and improvements in MCI.
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Novozhilov, A. N., D. K. Assainova, N. Sh Zhumataev, and T. A. Novozhilov. "Switched Magnetic Current Transformer." Russian Engineering Research 42, no. 6 (June 2022): 579–82. http://dx.doi.org/10.3103/s1068798x2206017x.

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Wunderlich, Jörg. "Current-switched magnetic insulator." Nature Materials 16, no. 3 (February 22, 2017): 284–85. http://dx.doi.org/10.1038/nmat4862.

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Shevchenko, Volodymyr, and Olga Babiychuk. "Magnetic field of current transformer." Electrical Engineering and Power Engineering, no. 4 (April 20, 2022): 8–17. http://dx.doi.org/10.15588/1607-6761-2021-4-1.

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Purpose. Development of equivalent circuits based on a detailed analysis of the magnetic field distribution in asymmetric CT structures and drawing up a mathematical model for calculating errors in relation to a multi-range built-in CT with a toroidal MC and a single-turn primary winding with different filling of the MC with turns of the secondary winding. Methodology. Experimental study of the magnetic field distribution in a toroidal current transformer and transformer errors Findings. The equivalent circuits of the current transformer, which adequately reflect the distribution of the magnetic field in the magnetic circuit of the transformer and a mathematical model for calculating the errors, were developed. Originality. Based on the results of modeling in FEMM and experimental studies, the nature of the distribution of the magnetic field with partial filling of the magnetic circuit with turns of the secondary winding was determined, and equivalent circuits of the current transformer were developed. Practical value. A mathematical model was developed for calculating the distribution of the magnetic field in the magnetic circuit and the transformer errors, on the basis of which a program for calculating the errors of current transformers was compiled.
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Abe, M., H. Tsujimura, and Jun Nakazoe. "A magnetic-modulator-type current-dividing highly stable DC current transformer for large currents." IEEE Transactions on Instrumentation and Measurement 40, no. 2 (April 1991): 284–87. http://dx.doi.org/10.1109/tim.1990.1032939.

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Khazanov, G. V., N. H. Stone, E. N. Krivorutsky, and M. W. Liemohn. "Current-produced magnetic field effects on current collection." Journal of Geophysical Research: Space Physics 105, A7 (July 1, 2000): 15835–42. http://dx.doi.org/10.1029/2000ja000039.

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Polański, Paweł, and Franciszek Szarkowski. "Simulations and Measurements of Eddy Current Magnetic Signatures." Zeszyty Naukowe Akademii Marynarki Wojennej 215, no. 4 (December 1, 2018): 77–102. http://dx.doi.org/10.2478/sjpna-2018-0028.

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Abstract Eddy current magnetic signature is, together with magnetization of ferromagnetic hull, mechanisms and devices on board, corrosion related and stray field sources one of the main sources of ship’s magnetic signature. Due to roll, pitch and yaw of the ship in external magnetic field, eddy currents are induced in conducting materials on board ship, mainly in conducting hull. Flow of those currents is a source of magnetic field around a ship. Principal eddy current component is related to roll movement as it depends on rate of change of external field which is the highest for roll. Induced currents have both in-phase and quadrature components. Magnitude of the eddy current magnetic field can have significant effect on total magnetic field signature after degaussing for ships such as mine sweepers and mine hunters. Paper presents calculations and simulations as well as measurements of model and physical scale model made of low magnetic steel performed in Maritime Technology Center. Contribution of eddy current magnetic field in total field in low roll frequencies has been estimated.
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Dissertations / Theses on the topic "Magnetic current"

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Raimbault, Nathaniel. "Gauge-invariant magnetic properties from the current." Thesis, Toulouse 3, 2015. http://www.theses.fr/2015TOU30179/document.

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De nombreux phénomènes physiques ne peuvent être compris qu'en s'intéressant à la structure électronique. Cette dernière peut être interprétée en termes de propriétés électromagnétiques, chacune de ces propriétés révélant diverses informations sur le système étudié. Il est donc important d'avoir des outils efficaces afin de calculer de telles propriétés. C'est dans ce contexte que cette thèse a été écrite, notre principal objectif ayant été de développer une méthode générale donnant accès à une vaste gamme de propriétés électromagnétiques. Dans la première partie de cette thèse, nous décrivons le socle théorique au sein duquel nous travaillons, en particulier la théorie de la fonctionnelle de la densité de courant dépendante du temps (TDCDFT), qui est une approche qui permet de décrire la réponse du système à un champ magnétique. La seconde partie est consacrée à la méthode que nous avons mise au point pour calculer diverses propriétés magnétiques en préservant l'invariance de jauge. Nous démontrons en particulier qu'en utilisant une simple règle de somme, il est possible de placer les courants diamagnétique et paramagnétique sur un pied d'égalité, évitant par là même les écueils habituels intrinsèques au calcul de propriétés magnétiques, comme la dépendance en l'origine de la jauge du vecteur potentiel. Nous illustrons notre méthode en l'appliquant notamment au calcul de la magnétisabilité et du dichroïsme circulaire, qui est une propriété possédant d'importantes applications pratiques, notamment en biologie. Dans la dernière partie, plus exploratoire, nous tentons d'étendre notre formalisme aux systèmes périodiques. Nous y discutons plusieurs stratégies afin de calculer l'aimantation dans des systèmes décrits par des conditions aux limites périodiques
Various phenomena of matter can only be understood by probing its electronic structure. The latter can be interpreted in terms of electromagnetic properties, each property revealing a different piece of information. Having a reliable method to calculate such properties is thus of great importance. This thesis is to be regarded in this context. Our main goal was to develop a general method that gives access to a wide variety of electromagnetic properties. In the first part of this thesis, we describe the theoretical background with which we work, and in particular time-dependent current-density-functional theory (TDCDFT), which is a density-functional approach that can describe the response due to a magnetic field. The second part is dedicated to the method we developed in order to calculate various magnetic properties in a gauge-invariant manner. In particular, we show that by using a simple sum rule, we can put the diamagnetic and paramagnetic currents on equal footing. We thus avoid the usual problems that arise when calculating magnetic properties, such as the dependence on the gauge origin of the vector potential. We illustrate our method by applying it to the calculation of magnetizabilities and circular dichroism, which has important applications, notably in biology. In the last part, which is more explorative, we aim at extending our formalism to periodic systems. We discuss several strategies to calculate magnetization in systems described with periodic boundary conditions
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Ersoz, Ali. "Magnetic Resonance Current Density Imaging Using One Component Of Magnetic Flux Density." Master's thesis, METU, 2010. http://etd.lib.metu.edu.tr/upload/12612164/index.pdf.

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Magnetic Resonance Electrical Impedance Tomography (MREIT) algorithms using current density distribution have been proposed in the literature. The current density distribution can be determined by using Magnetic Resonance Current Density Imaging (MRCDI) technique. In MRCDI technique, all three components of magnetic flux density should be measured. Hence, object should be rotated inside the magnet which is not trivial even for small size objects and remains as a strong limitation to clinical applicability of the technique. In this thesis, 2D MRCDI problem is investigated in detail and an analytical relation is found between Bz, Jx and Jy. This study makes it easy to understand the behavior of Bz due to changes in Jx and Jy. Furthermore, a novel 2D MRCDI reconstruction algorithm using one component of B is proposed. Iterative FT-MRCDI algorithm is also implemented. The algorithms are tested with simulation and experimental models. In simulations, error in the reconstructed current density changes between 0.27% - 23.00% using the proposed algorithm and 7.41% - 37.45% using the iterative FT-MRCDI algorithm for various SNR levels. The proposed algorithm is superior to the iterative FT-MRCDI algorithm in reconstruction time comparison. In experimental models, the classical MRCDI algorithm has the best reconstruction performance when the algorithms are compared by evaluating the reconstructed current density images perceptually. However, the J-substitution algorithm reconstructs the best conductivity image by using J obtained from the proposed algorithm. Finally, the iterative FT-MRCDI algorithm shows the best performance when the reconstructed current density images are verified by using divergence theorem.
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Eriksson, Oscar, and Kaj Dahl. "Magnetic Monopole Current in Artificial Square Spin Ice." Thesis, KTH, Skolan för teknikvetenskap (SCI), 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-154229.

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Recent theoretical and experimental results have revealed the existence of magnetic monopoles, in the form of quasi particles, in both condensed matter known as spin ice, as well as in two-dimensional artificial versions of the same material. In this report a two-dimensional Ising model is first examined, then an artificial square spin ice model using a dipole approximation, only taking into account nearest and next nearest neighbors. The Metropolis algorithm is used to obtain the internal energy, specific heat capacity and entropy as functions of temperature. In the latter model the magnetic monopole concentration and monopole current is also simulated. The two models show similar quantitative behavior in the above mentioned physical quantities, and in comparison to previously published results. In the artificial square spin ice model, under the influence of a magnetic field, a rapidly decreasing monopole current is observed, which decreases faster for higher temperatures. The magnitude of the magnetic field plays a significant role in the generation of the monopole current, and no direct effect of the phase transitionis observed.
Nya teoretiska och experimentella resultat har uppvisat förekomsten av magnetiska monopoler, i form av kvasi-partiklar, både i kondenserade material kallade spinn-is, och i tvådimensionella artificiella versioner av samma material. I den här rapporten undersöks först en tvådimensionell Isingmodell, därefter en artificiell kvadratisk spinn-is-modell med hjälpav en dipolapproximation, där hänsyn endast tas till närmaste och näst närmaste grannar. Metropolis-algoritmen används för beräkna energi, specifika värmekapaciteten och entropinsom funktioner av temperatur. I den senare modellen simuleras även monopolskoncentrationen och monopolsströmmen. De två modellerna uppvisar snarlikt kvantitativt beteende med avseende på ovan nämnda fysikaliska storheter, jämfört med varandra och tidigare publicerade resultat. Under inverkan av ett magnetfält observeras en snabbt avtagande monopolsström, i den artificiella kvadratiska spinn-is-modellen, som avtar snabbare med högre temperaturer. Storleken på det pålagda magnetfältet har markant betydelse för alstrande av monopolsströmmen, och ingen direkt effekt av fasövergången observeras.
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Wang, Margaret Hsin-Yi 1978. "Study of current measurement in magnetic force microscopy." Thesis, Massachusetts Institute of Technology, 2002. http://hdl.handle.net/1721.1/87296.

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Thesis (M.Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2002.
Includes bibliographical references (p. 137-140).
by Margaret Hsin-Yi Wang.
M.Eng.
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Watson, Joseph Conrad. "Eddy current detection of magnetic and non-magnetic metallic edges beneath continuous plate." Thesis, Brunel University, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.394797.

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Girlevicius, Lukas. "Active magnetic bearing driver circuit design featuring current measurement integration." Thesis, Uppsala universitet, Elektricitetslära, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-269215.

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Researchers at Uppsala University are developing a flywheel energy storage device intended to be used in electrical vehicles. Kinetic energy storage technology has potential to make purely electric powertrain both more effective and efficient. While deployment of the third prototype is approaching there has been a request for a more precise and noise-immune circuitry to power active magnetic bearings that hold and stabilise the rotor. A similar circuit designed for powering electromagnets was recently developed at the Uppsala University’s Electricity department and is used as a template in development of the new active magnetic bearing driver circuit. Current measurement integration technique is tested and implemented as a way to increase circuit’s control feedback loop performance. To further boost precision and noise-immunity 0-20 mA current loop signals are adapted as the standard for output signals. Results of this project include a thorough analysis of the electromagnet driver circuit development, implementation of a new current sensing technique including an experimental self-inductance measurement, printed circuit board layout design and a full list of components necessary to power and control two sets of active magnetic bearings consisting of 8 individual electromagnets.
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Xu, Ming. "Critical current density and time-dependent magnetization of the high transition temperature superconductors." Diss., Georgia Institute of Technology, 1990. http://hdl.handle.net/1853/30033.

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Fang, Dong. "Current-induced torque driven ferromagnetic resonance in magnetic microstructures." Thesis, University of Cambridge, 2011. https://www.repository.cam.ac.uk/handle/1810/241302.

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This Dissertation explores the interaction between the magnetisation and an alternating current in a uniform ferromagnetic system. Diluted magnetic semiconductors (Ga,Mn)As and (Ga,Mn)(As,P) have been studied. Due to their strong spin-orbit coupling and well-understood band-structure, these materials are well-suited to this investigation. The combined effect of spinorbit coupling and exchange interaction permits the alternating current to induce an oscillating current-induced torque (CIT) on the magnetisation. In the frequency range close to the natural resonance frequency of the magnetic moments (gigahertz), CIT can excite precessional motion of the magnetisation, a process known as ferromagnetic resonance (FMR). CIT can be parameterised by an effective magnetic field. By analysing the lineshape of the measured FMR signals, the magnitude and orientation of this effective field have been accurately determined. Moreover, the current-induced fields in these ferromagnetic materials have been observed with symmetries of the Dresselhaus, and for the first time, Rashba spin-orbit coupling. A new class of device-scale FMR technique, named as CIT-FMR, has been established in this Dissertation, with the advantage of simple device structure (only a resistor is required) and scalability (measurements have been performed on devices sized from 4 μm down to 80 nm). This technique is not only limited to magnetic semiconductors, but can also be transferred to study other ferromagnetic systems such as ultrathin metal films. Finally, the CIT-FMR technique is employed to study the magnetic anisotropyin individual (Ga,Mn)As and (Ga,Mn)(As,P) micro-devices. Devices down to 80 nm in width have been measured in (Ga,Mn)(As,P), which show strong strain-relaxation-induced anisotropy, larger than any previously reported cases on (Ga,Mn)As. Furthermore, due to the tensile-strain on the (Ga,Mn)(As,P) epilayers, the anisotropy field due to patterning-induced strain-relaxation in these devices is observed to take the opposite direction compared to that in the compressively-strained (Ga,Mn)As samples.
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Lillington, Mark Andrew Edwin. "Current-density maps and the magnetic criterion of aromaticity." Thesis, University of Sheffield, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.487604.

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On the magnetic criterion, an aromatic system is one that sustains a diatropic ring current. Once this definition is accepted, calculation of current density induced in a molecule by an external magnetic field gives a direct way of determining aromaticity from ab initio calculation. The ipsocentric treatment of molecular magnetic response, in which each point is the origin for the local current-density, offers an accurate, economical and conceptually transparent approach to the calculation of ring currents. The distribution of origin uniquely leads to physically non-redundant orbital contributions· that can be used to interpret (or predict) currents in terms of orbital symmetries, energies and nodal character. Diatropic and paratropic currents obey translational and rotational selection rules, respectively, leading to a 'spectroscopic', 'frontier-orbital' theory of ring currents and magnetic aromaticity. This thesis reports investigations of the nature and origin of ring currents in 1t-, (j- and homo-aromatic systems. Rules developed for annulenes extend to heterocycles and account for retention of ring-current aromaticity in perfluorobenzenes in which argon atoms are progressively inserted in the CF bonds. Currents in benzenoid and nonbenzenoid polycyclic aromatic hydrocarbons give varied patterns which can be rationalised in terms of Kekule structures and Pauling bond orders. These concepts are used to explain rim-and-hub currents in circulenes and design molecules with fully paramagnetic 1t currents, verified by ab initio calculation. Studies of heteropolycycles with carbocyclic cores demonstrate the aromaticity of mellitic trianhydride, the non-aromaticity of 'quasi-rings' closed by hydrogen- and lithium-bonds, and rationalise the magnetic properties of the new 'sulflowers' . Calculations on model rings of silicon atoms with tangential p-p bonding show the possibility of (j ring currents governed by modified versions of the ipsocentric 1t selection rules. Saturated cyclopropane also supports (j ring current. The homotropylium cation illustrates the association of a ring current of modified topology with homoaromaticity.
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Keller, Lisa A. "Current-mode control of a magnetic amplifier post regulator." Thesis, This resource online, 1991. http://scholar.lib.vt.edu/theses/available/etd-02132009-171329/.

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Books on the topic "Magnetic current"

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Haacke, E. Mark. Current protocols on magnetic resonance imaging. New York: Wiley, 2001.

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1962-, Ohtani Shin-ichi, and AGU Chapman Conference on Magnetospheric Current Systems (1999 : Kona, Hawaii), eds. Magnetospheric current systems. Washington, DC: American Geophysical Union, 2000.

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Rem, Peter C. Eddy current separation. Delft: Eburon, 1999.

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Chern, E. James. Eddy current characterization of magnetic treatment of materials. Greenbelt, Md: National Aeronautics and Space Administration, Goddard Space Flight Center, 1992.

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H. C. J. de Jong. AC motor design: Rotating magnetic fields in a changing environment. New York: Hemisphere Pub. Corp., 1989.

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B, Higgins Charles, Ingwall Joanne S, and Pohost Gerald M, eds. Current and future applications of magnetic resonance in cardiovascular disease. Armonk, NY: Futura Pub. Co., 1998.

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Betancourt, Israel. Magnetic materials: Current topics in amorphous wires, hard magnetic alloys, ceramics, characterization and modelling 2007. Trivandrum: Research Signpost, 2007.

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Dever, Timothy P. Evaluation and improvement of eddy current position sensors in magnetically suspended flywheel systems. [Cleveland, Ohio]: National Aeronautics and Space Administration, Glenn Research Center, 2001.

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Sharifi, Masoud. Magnetic field modelling of a Direct Current Electric ARC Furnace. Ottawa: National Library of Canada, 1994.

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Cartz, Louis. Nondestructive testing: Radiography, ultrasonics, liquid penetrant, magnetic particle, eddy current. Materials Park, OH: ASM International, 1995.

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Book chapters on the topic "Magnetic current"

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Smith, Steve. "Current Transformers." In Magnetic Components, 105–13. Dordrecht: Springer Netherlands, 1985. http://dx.doi.org/10.1007/978-94-015-4000-1_5.

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Wiltschko, Wolfgang, and Roswitha Wiltschko. "Magnetic Orientation in Birds." In Current Ornithology, 67–121. Boston, MA: Springer US, 1988. http://dx.doi.org/10.1007/978-1-4615-6787-5_2.

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Sheeley, Neil R. "Non-linear Current Ramps." In Transient Magnetic Fields, 49–82. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-40264-8_7.

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Dolan, Thomas J. "Plasma Heating and Current Drive." In Magnetic Fusion Technology, 175–232. London: Springer London, 2013. http://dx.doi.org/10.1007/978-1-4471-5556-0_5.

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Nikolajsen, Jorgen L. "Experimental Investigation of an Eddy-Current Bearing." In Magnetic Bearings, 111–18. Berlin, Heidelberg: Springer Berlin Heidelberg, 1989. http://dx.doi.org/10.1007/978-3-642-51724-2_11.

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Kamide, Y., R. L. McPherron, W. D. Gonzalez, D. C. Hamilton, H. S. Hudson, J. A. Joselyn, S. W. Kahler, L. R. Lyons, H. Lundstedt, and E. Szuszczewicz. "Magnetic storms: Current understanding and outstanding questions." In Magnetic Storms, 1–19. Washington, D. C.: American Geophysical Union, 1997. http://dx.doi.org/10.1029/gm098p0001.

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Rees, S., S. R. Underwood, and D. Firmin. "Magnetic Resonance." In Current Concepts in Critical Care, 115–23. London: Springer London, 1988. http://dx.doi.org/10.1007/978-1-4471-1440-6_10.

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Panissod, P. "Nuclear Magnetic Resonance." In Topics in Current Physics, 365–408. Berlin, Heidelberg: Springer Berlin Heidelberg, 1986. http://dx.doi.org/10.1007/978-3-642-46571-0_12.

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Sheeley, Neil R. "Radiated Energy for General Current Ramps." In Transient Magnetic Fields, 111–26. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-40264-8_10.

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Chen, Margaret W., Michael Schulz, and Larry R. Lyons. "Modeling of ring current formation and decay: A review." In Magnetic Storms, 173–86. Washington, D. C.: American Geophysical Union, 1997. http://dx.doi.org/10.1029/gm098p0173.

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Conference papers on the topic "Magnetic current"

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Overstreet, Ross W., George T. Flowers, and Gyorgy Szasz. "Design and Testing of a Permanent Magnet Biased Active Magnetic Bearing." In ASME 1999 Design Engineering Technical Conferences. American Society of Mechanical Engineers, 1999. http://dx.doi.org/10.1115/detc99/vib-8282.

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Abstract Magnetic bearings provide rotor support without direct contact. There is a great deal of current interest in using magnetic bearings for active vibration control. Conventional designs use electrical current to provide the bias flux, which is an integral feature of most magnetic bearing control strategies. Permanent magnet biased systems are a relatively recent innovation in the field of magnetic bearings. The bias flux is supplied by permanent magnets (rather than electrically) allowing for significant decreases in resistance related energy losses. The use of permanent magnet biasing in homopolar designs results in a complex flux flow path, unlike conventional radial designs which are much simpler in this regard. In the current work, a design is developed for a homopolar permanent magnet biased magnetic bearing system. Specific features of the design and results from experimental testing are presented and discussed. Of particular interest is the issue of reduction of flux leakage and more efficient use of the permanent magnets.
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Takayama, Yoshihisa, Atsuo Sueoka, and Takahiro Kondou. "Modeling of Eddy Current Damper Composed of Spherical Magnet and Conducting Shell." In ASME 2006 International Mechanical Engineering Congress and Exposition. ASMEDC, 2006. http://dx.doi.org/10.1115/imece2006-13114.

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If a conducting plate moves through a nonuniform magnetic field, eddy currents are induced in the conducting plate. The eddy currents produce a magnetic force of drag, known as Fleming's left-hand rule. This rule means that a magnetic field perpendicular to the direction of movement generates a magnetic damping force. We have fabricated the eddy current damper composed of the spherical magnet and the conducting shell. The spherical magnet produces the axisymmetric magnetic field, and the shape of the conducting shell appears to combine a semispherical shell conductor and a cylinder conductor. When the eddy current damper works, the conducting shell is fixed in space, and the spherical magnet moves under the conducting shell. In this case, since there are magnetic flux densities perpendicular to the direction of movement, eddy currents flow inside the conducting shell, and then a magnetic force is produced. The reaction force of this magnetic force acts on the spherical magnet. In our study, eddy current dampers composed of a magnet and a conducting plate have been modeled using infinitesimal loop coils. As a result, magnetic damping forces are obtained. Our modeling has three merits as follows: the equation of a magnetic damping force is simple in the equation, we can use the static magnetic field obtained using FEM, the Biot-Savart law or experiments and the equation automatically satisfies boundary conditions using infinitesimal loop coils. In this study, we explain simply the principle of this method, and model an eddy current damper composed of a spherical magnet and a conducting shell. The analytical results of the modeling agree well with the experimental results.
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Hoshikawa, H. "Eddy Current and Magnetic Testing of Magnetic Material by Uniform Eddy Current Probe." In REVIEW OF PROGRESS IN QUANTITATIVE NONDESTRUCTIVE EVALUATION. AIP, 2005. http://dx.doi.org/10.1063/1.1916716.

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Saida, D., T. Edura, K. Tsutsui, Y. Wada, and T. Takahashi. "Current-induced magnetic field detection around fine current paths by magnetic force microscopy." In INTERMAG Asia 2005: Digest of the IEEE International Magnetics Conference. IEEE, 2005. http://dx.doi.org/10.1109/intmag.2005.1463907.

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Khazanov, G. V., N. H. Stone, and E. N. Krivorutsky. "Current-produced magnetic field effects on current collection." In SPACE TECHNOLOGY AND APPLICATIONS INTERNATIONAL FORUM- STAIF 2002. AIP, 2002. http://dx.doi.org/10.1063/1.1449770.

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Dutta, Sushant M., and Fathi H. Ghorbel. "Magnetic Flux Leakage Sensing: Current Practices and Mathematical Analysis." In ASME 2007 International Mechanical Engineering Congress and Exposition. ASMEDC, 2007. http://dx.doi.org/10.1115/imece2007-42481.

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In this paper, we analyze magnetic flux leakage (MFL) sensing for the nondestructive evaluation (NDE) of ferromagnetic specimens. Understanding the processes involved in the creation of magnetic flux leakage fields and their measurement is critical to robotic inspection applications. In particular, robotic inspection of energy pipelines uses mobile robots to magnetize sections of the pipe and to measure the MFL signal to detect defects. We study current practices and motivate the need for improvements. To facilitate the analysis, we develop an analytical model to represent the 3-dimensional magnetic flux leakage field due to a surface-breaking defect in the specimen. The model is derived from first principles using the concept of dipole magnetic charge, and uses surface integrals to represent the MFL field as measured by a Hall-effect sensor. Simulations are performed which generate novel results, apart from reproducing experimental results from the literature. The mathematical tractability of the model is exploited to analyze its properties, such as scale–invariance, influence of lift-off, and the tangential MFL component. These properties give new insight into MFL sensing, interpretation, and defect characterization.
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Silveira, F. E. M. "Magnetic diffusion and current relaxation." In 11TH INTERNATIONAL CONFERENCE OF NUMERICAL ANALYSIS AND APPLIED MATHEMATICS 2013: ICNAAM 2013. AIP, 2013. http://dx.doi.org/10.1063/1.4825971.

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Sobornova, V. V., K. V. Belov, S. V. Efimov, V. V. Klochkov, I. E. Eremeev, and I. A. Khodov. "Experimental Observation of Hidden Conformations of Strychnine by NMR Spectroscopy." In Magnetic Resonance - Current State and Future Perspectives. Kazan University Press, 2019. http://dx.doi.org/10.26907/mrcsfp.2019.128.

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Chung, Tien-Kan, Po-Chen Yeh, and Chieh-Min Wang. "A Magnetic/Mechanical Approach for Optimizing a Miniature Self-Powered Current Sensor." In ASME 2013 Conference on Smart Materials, Adaptive Structures and Intelligent Systems. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/smasis2013-3124.

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In this paper, we demonstrate a magnetic/mechanical approach for optimizing a miniature self-powered current sensor. The sensor consists of a piezoelectric PZT sheet, CuBe cantilever beam, NdFeB magnet, and mechanical clamp. When the sensor is placed nearby an AC-current carrying wire from a breaker, the magnet fixed on the beam of the sensor experiences an alternative magnetic attractive and repulsive force produced by an AC magnetic field generated by the wire. Due to the alternative magnetic attractive and repulsive force, the magnet fixed on the beam is oscillated. The oscillating beam deforms the PZT sheet and subsequently produces strain in the PZT sheet. Due to the piezoelectric effect, the strain is converted to a voltage response. Through the optimized approach, the voltage output of the sensor is increased from 1.27 volts to 4.01 volts when the sensor is used to detect an AC current-carrying wire of 8 ampere at 60 Hz.
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TSOI, M. "CURRENT-DRIVEN MAGNONS IN MAGNETIC MULTILAYERS." In Physical Phenomena at High Magnetic Fields - IV. WORLD SCIENTIFIC, 2002. http://dx.doi.org/10.1142/9789812777805_0010.

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Reports on the topic "Magnetic current"

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Hegna, C. C., and J. D. Callen. Interaction of bootstrap-current-driven magnetic islands. Office of Scientific and Technical Information (OSTI), October 1991. http://dx.doi.org/10.2172/5071458.

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Obringer, John W., Brian Kelchner, and Brandon Horne. Mutagenic Effect on Alternating Current Magnetic Fields. Fort Belvoir, VA: Defense Technical Information Center, August 1997. http://dx.doi.org/10.21236/ada328264.

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Obringer, John W., Brandon Horne, and Brian Kelchner. Mutagenic Effect on Alternating Current Magnetic Fields. Fort Belvoir, VA: Defense Technical Information Center, August 1997. http://dx.doi.org/10.21236/ada328929.

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Obringer, John W., Tara E. Nolan, Brandon Horne, and Brian Kelchner. Mutagenic Potential of Direct Current Magnetic Fields. Fort Belvoir, VA: Defense Technical Information Center, September 1997. http://dx.doi.org/10.21236/ada329411.

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Shaing, K. C., and R. D. Hazeltine. Bootstrap current close to magnetic axis in tokamaks. Office of Scientific and Technical Information (OSTI), December 1996. http://dx.doi.org/10.2172/420368.

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Cannell, Michael J., and Richard A. McConnell. Magnetic Flux-Load Current Interactions in Ferrous Conductors. Fort Belvoir, VA: Defense Technical Information Center, June 1992. http://dx.doi.org/10.21236/ada256632.

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Grande, M., C. H. Perry, A. Hall, J. Fennell, and B. Wilken. Survey of Ring Current Composition During Magnetic Storms. Fort Belvoir, VA: Defense Technical Information Center, February 1998. http://dx.doi.org/10.21236/ada341671.

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Hegna, C. C., and J. D. Callen. Stability of bootstrap current driven magnetic islands in stellarators. Office of Scientific and Technical Information (OSTI), March 1994. http://dx.doi.org/10.2172/143983.

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Porkolab, Miklos, Jan Egedal-Pedersen, and William Fox. Experimental Study of Current-Driven Turbulence During Magnetic Reconnection. Office of Scientific and Technical Information (OSTI), August 2010. http://dx.doi.org/10.2172/1030818.

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Dodd, C. V., and W. E. Deeds. Eddy-current inspection of ferromagnetic tubing using pulsed magnetic saturation. Office of Scientific and Technical Information (OSTI), July 1986. http://dx.doi.org/10.2172/712807.

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