Results 61 to 70 of about 31,737 (275)
Magnetization dependent demagnetization characteristic of rare-earth permanent magnets [PDF]
Archives of Electrical Engineering, 2019 Accurate demagnetization modelling is mandatory for a reliable design of rare-earth permanent magnet applications, such as e.g. synchronous machines. The magnetization of rare-earth permanent magnets requires high magnetizing fields.
Gregor Bavendiek +3 more
doaj +1 more source
Electric current induced ultrafast demagnetization
Physical Review B, 2017 We report the magnetic response of Co/Pt multilayers to picosecond electrical heating. Using photoconductive Auston switches, we generate electrical pulses with 5.5 picosecond duration and hundreds of pico-Joules to pass through Co/Pt multilayers. The electrical pulse heats the electrons in the Co/Pt multilayers and causes an ultrafast reduction in the
Wilson, Richard B +5 more
openaire +5 more sources
Advanced Science, EarlyView.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 (
Yang Wu +5 more
wiley +1 more source
Design of an adiabatic demagnetization refrigerator for studies in astrophysics [PDF]
, 1983 An adiabatic demagnetization refrigerator was designed for cooling infrared bolometers for studies in astrophysics and aeronomy. The design was tailored to the requirements of a Shuttle sortie experiment. The refrigerator should be capable of maintaining
Castles, S.
core +1 more source
Archives of Electrical Engineering, 2020 This paper deals with the finite element analysis of the demagnetization process of the line start permanent magnet synchronous motor. Special attention has been paid to demagnetization risk assessment after resynchronization during a short-term supply ...
Tomasz Zawilak
doaj +1 more source
Demagnetizing Factor of Magnetic Fluid.
TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series B, 1996 The evaluation of demagnetizing factors of water-based magnetic fluids is performed from the comparison between an experiment and calculation and it is concluded that a demagnetizing factor of about 0.1 is recommendable.
Y Matsuno +3 more
openaire +2 more sources
Current‐Driven Nonreciprocal Response of Nonequilibrium Skyrmions
Advanced Science, EarlyView.A skyrmion holds great promise for spintronic applications owing to its intrinsic topological stability and high mobility under ultra‐low current excitation. Here, by means of in situ electron microscopy, we demonstrate a skyrmion diode effect and the associated current‐driven nonreciprocal skyrmion dynamics in a designed FeGe‐based microdevice.
Xiuzhen Yu +10 more
wiley +1 more source
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
doaj +1 more source
Mode Recognition and Fault Positioning of Permanent Magnet Demagnetization for PMSM
Energies, 2019 This paper proposes a demagnetization fault detection, mode recognition, magnetic pole positioning, and degree evaluation method for permanent magnet synchronous motors. First, the analytical model of the single-coil no-load back electromotive force (EMF)
Caixia Gao +4 more
doaj +1 more source
Advanced Science, EarlyView.Magnetoelectric nanoparticles (MENPs) enable fully wireless, minutely invasive neuromodulation, and potentially neural recording, by converting magnetic into electric and, conversely, electric into magnetic fields, respectively, at high spatiotemporal resolution.
Elric Zhang +14 more
wiley +1 more source