Results 21 to 30 of about 18,524,351 (243)

Element-resolved ultrafast demagnetization rates in ferrimagnetic CoDy [PDF]

Physical Review B, 2017
6 Figure, 2 ...
Ferté, Tom, Bergeard, Nicolas, Le Guyader, L., Hehn, Michel, Malinowski, G., Terrier, E., Otero, E., Holldack, K., Pontius, N., Boeglin, Christine   +9 more
openaire   +6 more sources

Optimization of an Asymmetric-Rotor Permanent Magnet-Assisted Synchronous Reluctance Motor for Improved Anti-Demagnetization Performance

Applied Sciences
Permanent magnet-assisted synchronous reluctance motors (PMA-SynRMs) are widely used in various fields due to their significant advantages, including strong torque output, high efficiency, excellent speed regulation, and low cost.
Feng Xing, Jiajia Zhang, Feng Zuo, Yuge Gao   +3 more
doaj   +2 more sources

Estimation of Permanent Magnet Demagnetization Rate of PMSMs for Brakes Based on the Speed Response under q-axis Step Current Excitation

Transaction of the Korean Society of Automotive Engineers, 2022
Kangwon Kim, Sang Bin Lee
openaire   +2 more sources

Ultrafast demagnetization mechanism in half-metallic Heusler alloy thin films controlled by the Fermi level

Physical review B, 2020
The electronic band-structure controlled ultrafast demagnetization mechanism in $\mathrm{C}{\mathrm{o}}_{2}\mathrm{F}{\mathrm{e}}_{x}\mathrm{M}{\mathrm{n}}_{1\ensuremath{-}x}\mathrm{Si}$ Heusler alloy is underpinned by systematic variation of composition.
S. Pan, T. Seki, K. Takanashi, A. Barman
semanticscholar   +2 more sources

Diagnosis of Uniform Demagnetization Faults in Permanent Magnet Synchronous Motors Based on Improved EEMD and PSO‑SVM

Nanjing Hangkong Hangtian Daxue Xuebao
This paper focuses on the study of uniform demagnetization fault diagnosis in permanent magnet synchronous motors （PMSMs） and proposes a novel method based on current signals for diagnosing faults at different degrees of uniform demagnetization.
XIONG Wenqi, ZHANG Yike, WANG Yaoyao
doaj   +2 more sources

Indirect excitation of ultrafast demagnetization [PDF]

Scientific Reports, 2016
Does the excitation of ultrafast magnetization require direct interaction between the photons of the optical pump pulse and the magnetic layer? Here, we demonstrate unambiguously that this is not the case.
B. Vodungbo, Bahrati Tudu, J. Perron, R. Delaunay, L. Müller, M. Berntsen, G. Grübel, G. Malinowski, Christian Weier, J. Gautier, G. Lambert, P. Zeitoun, C. Gutt, E. Jal, A. Reid, P. Granitzka, N. Jaouen, G. Dakovski, S. Moeller, M. Minitti, A. Mitra, S. Carron, B. Pfau, C. von Korff Schmising, M. Schneider, S. Eisebitt, J. Lüning   +26 more
semanticscholar   +5 more sources

Laser-induced terahertz spin transport in magnetic nanostructures arises from the same force as ultrafast demagnetization [PDF]

Physical review B, 2021
Laser-induced terahertz spin transport (TST) and ultrafast demagnetization (UDM) are central but so far disconnected phenomena in femtomagnetism and terahertz spintronics.
R. Rouzegar, L. Brandt, L. Nádvorník, D. Reiss, A. L. Chekhov, O. Gueckstock, Chihun In, Martin Wolf, T. Seifert, P. Brouwer, G. Woltersdorf, T. Kampfrath   +11 more
semanticscholar   +1 more source

Comparing Ultrafast Demagnetization Rates Between Competing Models for Finite Temperature Magnetism [PDF]

Physical Review Letters, 2013
We investigate a recent controversy in ultrafast magnetization dynamics by comparing the demagnetization rates from two frequently used but competing descriptions for finite temperature magnetism, namely a rigid band structure Stoner-like approach and a system of localized spins. The calculations on the localized spin system show a demagnetization rate
Schellekens, A.J., Koopmans, B.
openaire   +2 more sources

A vibration reduction method based on smooth voltage PWM control of switched reluctance machines

Energy Reports, 2022
At the beginning of the demagnetization instant of Switched Reluctance Machines (SRMs), the terminal voltage of the phase winding varies from the positive value of power supply to its negative with a sudden change. And this produces a high change rate of
Man Zhang, Hongqin Xie, Weihao Hu, Jian Li, Qi Huang, Rongchuan Zhou   +5 more
doaj   +1 more source

Substantial reduction of write-error rate for voltage-controlled magnetoresistive random access memory by in-plane demagnetizing field and voltage-induced negative out-of-plane anisotropy field

Journal of Magnetism and Magnetic Materials, 2023
Voltage-controlled magnetoresistive random access memory (VC-MRAM) based on voltage-induced dynamic switching in magnetic tunnel junctions (MTJs) is a promising ultimate non-volatile memory with ultralow power consumption. However, the dynamic switching in a conventional MTJ is accompanied by a relatively high write error rate (WER), hindering the ...
Rie Matsumoto, Shiniji Yuasa, Hiroshi Imamura   +2 more
openaire   +2 more sources