The demagnetization factor for randomly packed spheroidal particles
Sign Up to like & getrecommendations! 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
The microscopic origin of spin-orbit mediated spin-flips
Sign Up to like & getrecommendations! 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
Combined effect of demagnetization field and magnetic anisotropy on magnetocaloric behavior and magnetocaloric-magnetoresistance correlation in GdTmErCoAl high-entropy amorphous alloy
Sign Up to like & getrecommendations! 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
Sign Up to like & getrecommendations! 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
Sign Up to like & getrecommendations! 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
Sign Up to like & getrecommendations! 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
Design of high-speed permanent magnet synchronous machines considering thermal demagnetization and mechanical characteristic of permanent magnet
Sign Up to like & getrecommendations! 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
Magnetic domain-dependent ultrafast optical demagnetization in stripe domain films
Sign Up to like & getrecommendations! 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
The indispensable role of the transversal spin fluctuations mechanism in laser-induced demagnetization of Co/Pt multilayers with nanoscale magnetic domains.
Sign Up to like & getrecommendations! Published in 2018 at "Nanotechnology"
DOI: 10.1088/1361-6528/aabdc9
Abstract: The switching of magnetic domains induced by an ultrashort laser pulse has been demonstrated in nanostructured ferromagnetic films. This leads to the dawn of a new era in breaking the ultimate physical limit for the… read more here.
Keywords: magnetic domains; ultrafast demagnetization; laser; mechanism ... See more keywords
Investigation of ultrafast demagnetization and Gilbert damping and their correlation in different ferromagnetic thin films grown under identical conditions
Sign Up to like & getrecommendations! Published in 2023 at "Nanotechnology"
DOI: 10.1088/1361-6528/acc079
Abstract: Following the demonstration of laser-induced ultrafast demagnetization in ferromagnetic nickel, several theoretical and phenomenological propositions have sought to uncover its underlying physics. In this work we revisit the three temperature model (3TM) and the microscopic… read more here.
Keywords: gilbert damping; demagnetization gilbert; thin films; demagnetization ... See more keywords
Controlled coexcitation of direct and indirect ultrafast demagnetization in Co/Pd multilayers with large perpendicular magnetic anisotropy
Sign Up to like & getrecommendations! Published in 2018 at "Physical Review B"
DOI: 10.1103/physrevb.98.214436
Abstract: Ever since its discovery in 1996, ultrafast demagnetization has ignited immense research interest due to its scientific rigor and technological potential. A flurry of recent theoretical and experimental investigations has proposed direct and indirect excitation… read more here.
Keywords: ultrafast demagnetization; direct indirect; controlled coexcitation; indirect ultrafast ... See more keywords