Results 141 to 150 of about 18,524,351 (243)

Sparse‐Aperture Quasi‐Achromatic Spintronic Terahertz Emitter Enabled by Binary‐Phase Metasurface and Multi‐Spectral Intensity Optimization

Nanophotonics, Volume 15, Issue 19, 13 October 2026.
We propose a sparse‐aperture shared‐aperture design with multispectral intensity optimization, enabling a Pt/W binary‐phase metasurface directly integrated with a spintronic emitter. The device achieves quasi‐achromatic focusing across 1.0–1.5 THz, with intensity fluctuation below 33% and edge preservation above 0.68.
Wenkai Qiu, Yongshan Liu, Yunqing Jiang, Yong Xu, Sylvain Eimer, Xiaoqiang Zhang, Weisheng Zhao   +6 more
wiley   +1 more source

Ferromagnetic Core Demagnetization Procedures

Ovaj rad obrađuje problematiku zaostalog magnetskog toka u feromagnetskim jezgrama, s naglaskom na njegove negativne posljedice u transformatorima i mjernim uređajima.
Zovko, Valentina
core  

Demagnetization Issues in Low Cost Synchronous Machine

, 2019
The request for high efficiency motor opens the possibility of substituting induction motors with more efficient permanent magnet synchronous motors. For medium and high power, the current ripple causes significant additional losses in the magnet and ...
Davoli M., Bellini A., Formentini A., Torreggiani A., David D., Bianchini C., Ambra Torreggiani, Matteo Davoli, Andrea Formentini, Danilo David, Claudio Bianchini, Alberto Bellini   +11 more
core   +1 more source

Temperature Field Analysis and Experimental Verification of Mining High-Power Explosion-Proof Integrated Variable-Frequency Permanent Magnet Motor

Energies
An efficient cooling configuration is critical for ensuring the safe operation of electrical machines and is key for optimizing the iterative design of motors.
Xiaojun Wang, Gaowei Tian, Qingqing Lü, Kun Zhao, Xuandong Wu, Liquan Yang, Guangxi Li   +6 more
doaj   +1 more source

Terahertz-induced demagnetization in ferromagnets

, 2016
We experimentally demonstrate ultrafast terahertz induced demagnetization in conducting ferromagnets, Ni, Co, and Fe. At even higher excitation fluence, the materials lose their magnetic properties and then get damaged before magnetic switching takes ...
Shalaby, Mostafa, Vicario, Carlo, Hauri, Christoph P., Mostafa Shalaby, Carlo Vicario, Christoph P. Hauri   +5 more
core   +1 more source

The fluxgate ring-core demagnetization field

, 2006
The local demagnetization factor for the ring-core flux gate is derived analytically, based on a tangential magnetization model. The results are in good agreement with experimental data for a wide range of ring shape parameters.
Beleggia M, De Graef M
core   +1 more source

Demagnetization Procedure for the MBN Magnets

, 2002
Results from demagnetization tests of an MBN magnet are reported here. Following a "texbook" demagnetization procedure where alternating polarity current settings from saturation (1500A) down to 1% of this (15A) are applied, a remnant field of the order ...
Efthymiopoulos, I, Dutour, J, Cornuet, D
core  

Efficient thermal management of coaxial magnetic gears with pulsating heat pipe and forced air cooling

Jixie chuandong
ObjectiveThe field modulated magnetic gear （FMMG） with the coaxial structure has a higher transmission capacity, which can be comparable with mechanical gears.
ZHOU Yufeng, LUO Shuai, CHEN Hang, HAO Xiuhong   +3 more
doaj   +2 more sources

MAGNETIC CIRCUIT EQUIVALENT OF THE SYNCHRONOUS MOTOR WITH INCORPORATED MAGNETS

Известия высших учебных заведений и энергетических объединенний СНГ: Энергетика, 2015
Magnetic circuitry computation is one of the central stages of designing a synchronous motor with incorporated magnets, which can be performed by means of a simplified method of the magnetic-circuits equivalent modeling.
Fyong Le Ngo, G. I. Gul’kov
doaj  

Strain-Engineered Ultrafast Spin Dynamics Revealing Decoupled Magnetization and Heat Transport in SrRuO₃ Membranes for Flexible Spintronics. [PDF]

Small
Lu Q, Hao B, Ren Y, Wang Z, Huang B, Nie Y, Sheng Z.   +6 more
europepmc   +1 more source