Results 11 to 20 of about 264,735 (343)

Complexity of magnetization and magnetic simplification

open access: yesPhysical Review D, 2023
We use the complexity=volume (CV) prescription to study the effect of a magnetic field on the computational complexity for states in the gauge theories dual to two different gravitational models. In one of these theories the complexity increases with the intensity of the magnetic field, while in the other a more interesting behavior is discovered ...
Daniel Ávila   +2 more
openaire   +2 more sources

An optimized magnet for magnetic refrigeration [PDF]

open access: yesJournal of Magnetism and Magnetic Materials, 2010
A magnet designed for use in a magnetic refrigeration device is presented. The magnet is designed by applying two general schemes for improving a magnet design to a concentric Halbach cylinder magnet design and dimensioning and segmenting this design in an optimum way followed by the construction of the actual magnet.
Bjørk, Rasmus   +4 more
openaire   +4 more sources

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

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

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

Surface-induced magnetism in C-doped SnO$_{2}$ [PDF]

open access: yes, 2010
The magnetism of C-doped SnO$_{2}$ (001) surfaces is studied using first-principles calculations. It is found that carbon does not induce magnetism in bulk SnO$_{2}$ when located at the oxygen site, but shows a large magnetic moment at the SnO$_{2}$ (001)
García-Suárez, Víctor M.   +2 more
core   +2 more sources

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

Extension of the Application Range of Multipolar Bonded Ring Magnets by Thermosets in Comparison to Thermoplastics

open access: yesMagnetism, 2023
To expand the range of applications of multipolar bonded magnets based on a thermoplastic matrix, the chemical and thermal resistance has to be increased and the reduced orientation in the rapid solidified surface layer has to be overcome.
Uta Rösel, Dietmar Drummer
doaj   +1 more source

Simulations of Temperature-Dependent Magnetization in FexGd100−x (20 ≤ x ≤ 80) Alloys

open access: yesMagnetism, 2023
Theoretical calculations of the temperature-dependent magnetization in FeGd alloys were done with the use of Heisenberg-type atomistic spin Hamiltonian and Monte Carlo algorithms.
Oleksandr Pastukh   +2 more
doaj   +1 more source

Correlation of Light Polarization in the Magnetic Media with Non-Spherical Point-Like Inclusions

open access: yesMagnetism, 2022
Light propagation through magnetic media with ellipsoidal inclusions much smaller than the light wavelength was investigated theoretically. It is assumed that the ellipsoidal inclusions have the same orientation but are randomly distributed inside the ...
Ramil A. Niyazov   +2 more
doaj   +1 more source

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