Results 41 to 50 of about 9,673 (258)

Nuclear demagnetization for ultra-low temperatures

, 2014
Nuclear demagnetization is one of the most successful methods of cooling an appreciable amount of matter to the lowest temperatures. The principle of nuclear demagnetization is the same as that of the adiabatic demagnetization of a paramagnetic salt ...
Matsumoto, Koichi, 10219496, 114, 60251914, 松本, 宏一, Abe, Satoshi, 阿部, 聡, 262   +7 more
core   +1 more source

Influence of photon angular momentum on ultrafast demagnetization in nickel [PDF]

, 2007
The role of pump helicity in laser-induced demagnetization of nickel thin films is investigated by means of pump-probe time-resolved magneto-optical Kerr effect in the polar geometry.
Dalla Longa, F Francesco, Jonge, WJM Wim de, Koopmans, B Bert, Jonge, de, W.J.M., Koopmans, B., Kohlhepp, J.T., Dalla Longa, F., Kohlhepp, JT Jürgen   +7 more
core   +1 more source

Integrated Field‐Free SOT Domain‐Wall Synapses and MTJ Stochastic Neurons for Hardware Boltzmann Machines

Advanced Functional Materials, EarlyView.
Field‐free spin‐orbit torque domain‐wall synapses integrated with stochastic MTJ neurons enable compact hardware Boltzmann machines. Leveraging intrinsic stochasticity and multi‐level conductance, the system achieves efficient probabilistic learning with high accuracy, demonstrating a scalable spintronic platform for energy‐efficient edge AI.
Aijaz H. Lone, Meng Tang, Camelia Florica, Bin He, Jingkai Xu, Selma Amara, Georgian Melinte, Xixiang Zhang, Gianluca Setti   +8 more
wiley   +1 more source

Behavior of Greigite‐Bearing Marine Sediments During AF and Thermal Demagnetization and Its Significance

Geochemistry, Geophysics, Geosystems, 2020
Gyro‐remanent magnetization (GRM) is a frequently occurring yet unwanted remanence contamination for certain samples during alternating field (AF) demagnetization of the natural remanent magnetization.
Zongqi Duan, Qingsong Liu, Huafeng Qin, Xixi Zhao, Xing Gao   +4 more
doaj   +1 more source

Correction to “Micromagnetic models of pseudo-single domain grains of magnetite near the Verwey Transition”

, 1999
Domain structures of small pseudo-single domain (PSD) magnetite near the Verwey transition (Tυ) at ≈120 K were modeled using an unconstrained three-dimensional micromagnetic algorithm.
A. R. Muxworthy, W. Williams, Muxworthy, A. R., Williams, Wyn; id_orcid   +3 more
core   +1 more source

Comparison of Simulation Methods for Angular Dependency when Modeling Demagnetization

, 2023
Rare earth element free magnets, such as ferrites, are weaker than their more common alternatives and therefore more prone to demagnetization. Additionally, in permanent magnet electrical machines they are commonly tangentially magnetized and placed in a
Silva, Marcelo D., Eriksson, Sandra
core   +1 more source

Development of a Three‐Axis Planar Hall Magnetoresistance Sensor Using a Superparamagnetic Nanoparticle‐Based Flux Guide

Advanced Functional Materials, EarlyView.
A printed superparamagnetic nanoparticle‐based flux guide enables the realization of a hysteresis‐free three‐axis magnetic sensor. This innovative architecture efficiently redirects out‐of‐plane fields to planar sensing elements, facilitating simultaneous vector detection without complex reset protocols.
Changyeop Jeon, Mijin Kim, Keonmok Kim, Byeonghwa Lim, Bibhutibhusan Nayak, Youngdo Jung, Bo‐Yeon Lee, Taehyeong Jeon, Jinwoo Kim, Sunjong Oh, CheolGi Kim   +10 more
wiley   +1 more source

A Novel Method for Automatically and Accurately Diagnosing Demagnetization Fault in Direct-Drive PMSMs Using Three PNNs

Applied Sciences
Direct-drive permanent magnet synchronous machines (DDPMSMs) have recently become an ideal candidate for applications such as military, robotics, electric vehicles, etc.
Yiyong Xiong, Jinghong Zhao, Sinian Yan, Kun Wei, Haiwen Zhou   +4 more
doaj   +1 more source

Representative results of thermal demagnetization experiments.

, 2023
Each sub- figure displays remaining magnetization after every demagnetization step, normalized to the initial magnetization (NRM) versus the temperature of the demagnetization step.
Aren M. Maeir (2847761), Yoav Vaknin (5893877), Adi Eliyahu Behar (17118009), Oded Lipschits (9220898), Erez Ben-Yosef (4178914), Ron Shaar (5893859)   +5 more
core   +1 more source

Self‐Cooling Molecular Spin Qudits

Advanced Materials, EarlyView.
A material made of [GdEr] molecular dimers can encode a qudit and perform as a magnetic refrigerant. Microwave resonant pulses coherently manipulate its 16 spin states, while direct demagnetization measurements cool the material and a device down to temperatures below 1 K.
Elías Palacios, David Aguilà, David Gracia, Diamatoula Maniaki, Leoní A. Barrios, Alessandro Chiesa, Jesús I. Martínez, Valentin Novikov, Olivier Roubeau, Stefano Carretta, Marco Evangelisti, Guillem Aromí, Fernando Luis   +12 more
wiley   +1 more source