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   Articles with "demagnetization" as a keyword



The demagnetization factor for randomly packed spheroidal particles

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recommendations! Published in 2019 at "Journal of Magnetism and Magnetic Materials"

DOI: 10.1016/j.jmmm.2019.01.005

Abstract: Abstract We investigate if the demagnetization factor for a randomly packed powder of magnetic spheroidal particles depend on the shape of the spheroidal particles and what the internal variation in magnetization is within such a… read more here.

Keywords: spheroidal particles; factor randomly; demagnetization; demagnetization factor ... See more keywords
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The microscopic origin of spin-orbit mediated spin-flips

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recommendations! Published in 2020 at "Journal of Magnetism and Magnetic Materials"

DOI: 10.1016/j.jmmm.2020.166473

Abstract: Abstract Laser induced ultrafast demagnetization is a powerful process by which the magnetic moment of a material can be modified on femtosecond timescales. However, to eventually utilize this process in technology, it is crucial that… read more here.

Keywords: mediated spin; demagnetization; orbit mediated; spin orbit ... See more keywords
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Combined effect of demagnetization field and magnetic anisotropy on magnetocaloric behavior and magnetocaloric-magnetoresistance correlation in GdTmErCoAl high-entropy amorphous alloy

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recommendations! Published in 2021 at "Journal of Magnetism and Magnetic Materials"

DOI: 10.1016/j.jmmm.2021.167817

Abstract: Abstract The magnetic, magnetocaloric and transport properties were investigated systematically on Gd20Tm20Er20Co20Al20 high-entropy amorphous ribbons with magnetic fields parallel and perpendicular to ribbon surfaces. It is found that the alloy shows greater magnetic entropy change… read more here.

Keywords: field; magnetic anisotropy; alloy; high entropy ... See more keywords

Demagnetization fault reconstruction for six-phase permanent magnet synchronous motor by improved super-twisting algorithm-based sliding-mode observer

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recommendations! Published in 2021 at "Measurement"

DOI: 10.1016/j.measurement.2020.108905

Abstract: Abstract Demagnetization fault causes the performance degradation of a permanent magnet synchronous motor (PMSM) drive system. Therefore, it is of great importance to reconstruct demagnetization fault in real-time. This paper firstly presents a demagnetization fault… read more here.

Keywords: motor; sliding mode; demagnetization; demagnetization fault ... See more keywords

Performance comparison between rotor flux-switching and stator flux-switching machines considering local demagnetization

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recommendations! Published in 2017 at "AIP Advances"

DOI: 10.1063/1.4974917

Abstract: This paper investigates the local permanent magnet (PM) demagnetization characteristics of stator-PM flux-switching (SPM-FS) machine and rotor-PM flux-switching (RPM-FS) machine. The partial demagnetization mechanisms of two machines are analyzed based on a simple magnetic circuit… read more here.

Keywords: machine; rotor flux; flux switching; demagnetization ... See more keywords

Experimental and computational analysis of the two-step demagnetization behavior of the surface grains of sintered Nd-Fe-B magnets

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recommendations! Published in 2018 at "Journal of Applied Physics"

DOI: 10.1063/1.5036685

Abstract: The two-step demagnetization behavior was observed before the coercive field of a sintered Nd-Fe-B magnet with a large specific surface (S/V). The squareness factor of the demagnetization curve and the energy product decreased with the… read more here.

Keywords: surface; two step; step demagnetization; demagnetization ... See more keywords

Laser-wavelength dependence of ultrafast demagnetization in ferromagnetic metals

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recommendations! Published in 2025 at "Journal of Applied Physics"

DOI: 10.1063/5.0237361

Abstract: Laser-induced ultrafast demagnetization (UD) in ferromagnetic metals opens a new frontier at the intersection between laser technology and materials sciences. However, a complete understanding is still missing even in simple 3d metals. Prior studies have… read more here.

Keywords: laser wavelength; ultrafast demagnetization; demagnetization; ferromagnetic metals ... See more keywords
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Design of high-speed permanent magnet synchronous machines considering thermal demagnetization and mechanical characteristic of permanent magnet

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recommendations! Published in 2021 at "AIP Advances"

DOI: 10.1063/9.0000152

Abstract: This paper presents the design for a high-speed permanent magnet synchronous machine (PMSMs) considering the demagnetization and mechanical characteristics of rare-earth magnets based on the operating temperature. The TRV equation and plane stress analytical method… read more here.

Keywords: temperature; permanent magnet; magnet; demagnetization ... See more keywords

Demagnetization analysis of outer-rotor-type BLDC motors considering permanent magnet overhang structure

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recommendations! Published in 2024 at "AIP Advances"

DOI: 10.1063/9.0000732

Abstract: This paper presents an analysis of demagnetization of an outer rotor type brushless DC (BLDC) motor with a permanent magnet (PM) overhang structure. The proposed model converts the operating points of PM to consider such… read more here.

Keywords: demagnetization analysis; overhang structure; analysis; rotor ... See more keywords

Magnetic domain-dependent ultrafast optical demagnetization in stripe domain films

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recommendations! Published in 2023 at "Journal of Physics D: Applied Physics"

DOI: 10.1088/1361-6463/accd7d

Abstract: We investigated femto- and picosecond-time magnetization dynamics in a ferromagnetic Ni80Fe20 film with varying thicknesses (wedge-shaped film). We observed that the thickness gradient strongly affects the magnetic moment distribution, causing a magnetization reorientation from in-plane… read more here.

Keywords: magnetization; physics; stripe domain; domain ... See more keywords

Inter-turn short circuit and demagnetization fault diagnosis of ship PMSM based on multiscale residual dilated CNN and BiLSTM

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recommendations! Published in 2024 at "Measurement Science and Technology"

DOI: 10.1088/1361-6501/ad19c0

Abstract: Inter-turn short circuit (ITSC) and demagnetization of permanent magnet synchronous motors (PMSMs) can lead to serious ship accidents, timely and accurate fault diagnosis of these faults is very important. A multi-signal fusion fault diagnosis method… read more here.

Keywords: cnn; bilstm; demagnetization; fault diagnosis ... See more keywords