Results 21 to 30 of about 36,037 (120)

Simultaneous Spin and Point-Group Adaptation in Exact Diagonalization of Spin Clusters

open access: yesMagnetism
While either a spin or point-group adaptation is straightforward when considered independently, the standard technique for factoring isotropic spin Hamiltonians by the total spin S and the irreducible representation Γ of the point group is limited by the
Shadan Ghassemi Tabrizi   +1 more
doaj   +1 more source

Investigation of the Features of a Superconducting Spin Valve Fe1/Cu/Fe2/Cu/Pb on a Piezoelectric PMN–PT Substrate

open access: yesMagnetism, 2023
The properties of a superconducting spin valve Fe1/Cu/Fe2/Cu/Pb on a piezoelectric PMN–PT substrate ([Pb(Mg1/3Nb2/3)O3]0.7–[PbTiO3]0.3) in electric and magnetic fields have been studied.
Andrey Kamashev   +6 more
doaj   +1 more source

A Model-Based Method Applying Sliding Mode Methodology for SynRM Sensorless Control

open access: yesMagnetism
In this paper, a new sensorless approach is proposed to address the speed and position estimation of the Synchronous Reluctance Machine (SynRM). The design of the sensorless control algorithm is developed on the basis of the modified SynRM mathematical ...
Vasilios C. Ilioudis
doaj   +1 more source

Influence of Hydrogen Reduction Stage Conditions on the Microwave Properties of Fine Iron Powders Obtained via a Spray-Pyrolysis Technique

open access: yesMagnetism, 2023
The relationship between the chemical purity of one-size particles and microwave properties in ferromagnetic materials is not clearly studied. Ferromagnetic nanostructured iron powders were synthesized from iron nitrate solution using ultrasonic spray ...
Anastasia V. Artemova   +6 more
doaj   +1 more source

Effect of Laminated Core Body Size on Motor Magnetic Properties

open access: yesMagnetism, 2023
The magnetic characteristics of electromagnetic steel sheets used for motors are evaluated under ideal sinusoidal excitation. However, in actual equipment driving, excitation by pulse-width modulation (PWM) waves is the mainstream method.
Kyyoul Yun
doaj   +1 more source

On the Modernisation of Weber’s Electrodynamics

open access: yesMagnetism, 2023
This work is an attempt to modernise Weber’s electrodynamics to make it compatible with the high-velocity regime, and with the existence of a limiting velocity, c.
Juan Manuel Montes
doaj   +1 more source

Automated High-Speed Approaches for the Extraction of Permanent Magnets from Hard-Disk Drive Components for the Circular Economy

open access: yesMagnetism
This work describes an automated pilot plant for the extraction of rare-earth (RE) permanent magnets from computer hard-disk drives (HDDs), demonstrating a commercially viable way to exploit these abundant sources of end-of-life (EOL) magnets.
Carlo Burkhardt   +6 more
doaj   +1 more source

Enhancing Magnetic Coupling Using Auxiliary Short-Circuited Coils

open access: yesMagnetism
The efficiency of Dynamic Inductive Power Transfer (DIPT) depends mainly on the coupling coefficient within the coupler. In order to improve this parameter, a novel approach has been introduced that results in a significant increase of between 25% and 36%
Tanguy Phulpin   +4 more
doaj   +1 more source

Ab Initio Investigation on the Magnetic Moments, Magnetocrystalline Anisotropy and Curie Temperature of Fe2P-Based Magnets

open access: yesMagnetism
Permanent magnetic materials are essential for technological applications, with the majority of available magnets being either ferrites or materials composed of critical rare-earth elements, such as well-known Nd2Fe14B.
Stephan Erdmann   +2 more
doaj   +1 more source

Effect of High-Harmonic Wave-Vector Interactions on the Single-Q Spiral State

open access: yesMagnetism
We investigate the role of high-harmonic wave-vector interactions, which affect the stability of the single-Q spiral state and often result in the formation of multiple-Q states.
Satoru Hayami
doaj   +1 more source

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