Results 11 to 20 of about 3,049,338 (225)
Three-stage ultrafast demagnetization dynamics in a monolayer ferromagnet
Nature CommunicationsIntense laser pulses can be used to demagnetize a magnetic material on an extremely short timescale. While this ultrafast demagnetization offers the potential for new magneto-optical devices, it poses challenges in capturing coupled spin-electron and ...
Na Wu +4 more
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Iranian Journal of Electrical and Electronic Engineering, 2018 Permanent magnet motors have been considered for a variety of applications due to their features such as high power density and high efficiency. One of the issues that should be investigated in the design of these motors is the demagnetization problem ...
F. Mahmouditabar, A. Vahedi, P. Ojaghlu
doaj +1 more source
Research into methods of pipe end demagnetization under main pipeline repair
Electrical engineering & Electromechanics, 2014 Efficiency of pipe end demagnetization methods is experimentally investigated to avoid arc magnetism at repair welding jobs on main pipelines. It is found that multi-polar biased static and dynamic demagnetization provides an acceptable level of magnetic
P.N. Dobrodeyev
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Thermal Demagnetization Characteristics of NdFeB Used in Eddy Current Dampers
IEEE AccessWith continuously improving NdFeB magnetic properties, eddy current dampers using NdFeB materials as energy sources can be used in places with high energy consumption densities.
Yuxin Yang, Lei Li, He Zhang
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IEEE Access, 2022 The dynamic eccentricity fault (DEF) of the interior permanent magnet synchronous motor (IPMSM) is mainly caused by external mechanical shock. In the case of DEF, an unbalanced magnetic force occurs because the length of the air gap is not constant ...
Jun-Kyu Kang, Jin Hur
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Journal of Magnetism and Magnetic Materials, 2010 Abstract In this work, we investigate dynamically the dipolar driven demagnetization process of magnetic multi-core particles by solving the Landau–Lifshitz equation for single-domain particles distributed on a three-dimensional sphere. We analyze the relaxation time in respect to different geometry and material parameters.
Weddemann, Alexander +4 more
openaire +3 more sources
AIP AdvancesThis study investigates the influence of abnormally grown grains on the magnetic properties of FeNdB sintered magnets. Specifically, the local demagnetization process caused by abnormally grown grains in the microstructure was analyzed by dynamic Kerr ...
Dominic Hohs +4 more
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Laser-Induced Ultrafast Magnetic Phase Transition in 2D Van Der Waals Antiferromagnetic Heterostructures. [PDF]
Adv Sci (Weinh)In this work, ultrafast laser‐induced spin transfer and spin relaxation dynamics in 2D van der Waals antiferromagnetic CrI3/CrGeTe3 heterostructures are investigated. Laser excitation is demonstrated to induce pronounced interlayer nonequilibrium spin dynamics and ultrafast magnetic moment reconstruction, driving a transition from an antiferromagnetic (
Wu Y +5 more
europepmc +2 more sources
Programmable Topological Magnetic Textures in Above-Room-Temperature 2D Ferromagnet Fe<sub>3</sub>GaTe<sub>2</sub>. [PDF]
Adv Sci (Weinh)This work demonstrates the programmable generation and deterministic modulation of magnetic skyrmion bags with high‐order topological numbers in the above‐room‐temperature 2D ferromagnet Fe3GaTe2 (FGaT) via current‐pulse control. Furthermore, highly efficient electrical manipulation and current‐driven parallel motion of these high‐order topological ...
Shi H +8 more
europepmc +2 more sources
Active Fault-tolerant Control for Surface Permanent Magnet Synchronous Motor Under Demagnetization Fault [PDF]
, 2023 International audienceThis paper introduces a novel method for controlling a surface permanent magnet synchronous motor (SPMSM) during demagnetization fault conditions.
Benkhoris, Mohamed Fouad +3 more
core +2 more sources