Results 1 to 10 of about 18,524,351 (243)

Aluminum nuclear-demagnetization refrigerator for powerful continuous cooling [PDF]

Physical Review Applied
Many laboratories routinely cool samples to 10 mK, but relatively few can cool condensed matter below 1 mK. Easy access to the microkelvin range would propel fields such as quantum sensors and quantum materials.
Matthias Raba, S. Triqueneaux, J. Butterworth, D. Schmoranzer, E. Barria, J. Debray, G. Donnier-Valentin, Thibaut Gandit, A. Gerardin, J. Goupy, Olivier Tissot, Eddy Collin, A. Fefferman   +12 more
semanticscholar   +3 more sources

Design and analysis of 12 MW offshore wind turbine

Energy Reports, 2022
Permanent magnet synchronous motors are widely used in various fields for the advantages of high power density, high efficiency and high reliability.
Junqiang Xing, Wendi Yu, Yundong Song, Yunshuo Zhang, Zhuwen Dai   +4 more
doaj   +1 more source

Electromagnetic alternators with composite amorphous alloy shell for improving characteristics

AIP Advances, 2023
In this study, a magnetic casing encapsulating a generator is used to improve the electromagnetic and power characteristics of the generator. Two types of two-pole AC generators are proposed: one is a bare-bonded (NC) type and the other is an iron-based ...
Chang-Hung Hsu
doaj   +1 more source

Pump–probe x-ray microscopy of photo-induced magnetization dynamics at MHz repetition rates

Structural Dynamics, 2023
We present time-resolved scanning x-ray microscopy measurements with picosecond photo-excitation via a tailored infrared pump laser at a scanning transmission x-ray microscope.
Kathinka Gerlinger, Bastian Pfau, Martin Hennecke, Lisa-Marie Kern, Ingo Will, Tino Noll, Markus Weigand, Joachim Gräfe, Nick Träger, Michael Schneider, Christian M. Günther, Dieter Engel, Gisela Schütz, Stefan Eisebitt   +13 more
doaj   +1 more source

Internal Flow Field and Loss Analysis of a Magnetic Drive Pump’s Cooling Circuit

Energies, 2023
The cooling circuit is an important component of the magnetic drive pump because it prevents demagnetization of the permanent magnet and damage to the containment shell owing to a high temperature increase. In this paper, the flow field and losses of the
Zhenfa Xu, Fanyu Kong, Kun Zhang, Yinfeng Wang, Jiaqiong Wang, Ning Qiu   +5 more
doaj   +1 more source

Ultrafast Demagnetization Governed by Spin Fluctuations in CaRuO_{3}/SrTiO_{3} Superlattice. [PDF]

Physical Review Letters
For ultrafast magnetization switching devices, critical slowing down in conventional ferromagnets near their Curie temperature constitutes a key challenge that must be overcome.
Yu-Han Gao, Wen-Xi Shi, Yuan-Sha Chen, Ji-Rong Sun, Qing-Lin Yang, Xu Yang, Zhu Deng, Peng-Tao Yang, Zheng Chang, Hong-Mei Feng, W. He, Xiang-Qun Zhang, Zhao-Hua Cheng   +12 more
semanticscholar   +1 more source

Spin-lattice angular momentum transfer of localized and valence electrons in the demagnetization transient state of gadolinium

Applied Physics Letters, 2021
The electron–phonon scattering is one of the main microscopic mechanisms responsible for the spin-flip in the transient state of ultrafast demagnetization.
R. Decker, Artur Born, K. Ruotsalainen, K. Bauer, Robert Haverkamp, Robby Büchner, A. Pietzsch, A. Föhlisch   +7 more
semanticscholar   +1 more source

Longitudinal evolution of magnetization of ferromagnets following ultrafast demagnetization: Role of finite size and shape of demagnetized region

Condensed Matter Physics, 2014
A dependence of a relaxation rate on the shape of the demagnetized region for a longitudinal evolution of total magnetization to its equilibrium value following the ultrafast demagnetization is demonstrated. This shape-dependence is caused by a motion of
I.A. Yastremsky
doaj   +1 more source

Structural Design of Demagnetization Detection Robot in Oil and Gas Pipeline

Shiyou jixie, 2020
The oil and gas pipelines in service will produce certain residual magnetism due to the influence of various factors. To quickly and efficiently eliminate the residual magnetism, according to the theory of dynamic demagnetization of permanent magnets, a ...
Jia Shihao, Zhao Hong
doaj  

Closed-Loop Magnetization State Control for a Variable-Flux Memory Machine

IEEE Access, 2020
Variable flux memory machines (VFMM) use magnetization and demagnetization manipulations to adjust machine voltage, achieving wide-speed high-efficiency operation.
Yusheng Hu, Junhua Chen, Ronghai Qu, Bin Chen, Yong Xiao, Xia Li   +5 more
doaj   +1 more source