Results 41 to 50 of about 7,370 (261)

Nonlinear Magnon Scattering Mechanism for Microwave Pumping in Magnetic Films

open access: yesIEEE Access, 2020
Magnon scattering enables non-linear microwave devices, such as frequency selective limiters and signal to noise enhancers. It may also impact information transfer within spintronic devices.
Tao Qu   +7 more
doaj   +1 more source

Real-space observation of current-driven domain wall motion in submicron magnetic wires [PDF]

open access: yes, 2004
Spintronic devices, whose operation is based on the motion of a magnetic domain wall (DW), have been proposed recently. If a DW could be driven directly by flowing an electric current instead of a magnetic field, the performance and functions of such ...
1000040222327   +12 more
core   +2 more sources

Spin current pumped by confined breathing skyrmion

open access: yesNew Journal of Physics, 2020
Spin pumping is a widely recognized method to generate the spin current in the spintronics, which can be found in varieties of magnetic materials and is acknowledged as a fundamentally dynamic process equivalent to the spin-transfer torque. In this work,
Chunlei Zhang   +6 more
doaj   +1 more source

Exploring dynamical magnetism with time-dependent density-functional theory: from spin fluctuations to Gilbert damping [PDF]

open access: yes, 2002
We use time-dependent spin-density-functional theory to study dynamical magnetic phenomena. First, we recall that the local-spin-density approximation (LSDA) fails to account correctly for magnetic fluctuations in the paramagnetic state of iron and other
Capelle, K., Gyorffy, B. L.
core   +1 more source

Micromagnetic localization

open access: yesJournal of Applied Physics, 1998
The localization of nucleation modes in inhomogeneous ferromagnets and its influence on the coercivity are investigated. From the formal analogy between quantum mechanics and micromagnetics follows that anisotropy inhomogeneities may cause localization.
openaire   +2 more sources

Manipulation of Time- and Frequency-Domain Dynamics by Magnon-Magnon Coupling in Synthetic Antiferromagnets

open access: yesMagnetochemistry, 2021
Magnons (the quanta of spin waves) could be used to encode information in beyond Moore computing applications. In this study, the magnon coupling between acoustic mode and optic mode in synthetic antiferromagnets (SAFs) is investigated by micromagnetic ...
Xing Chen   +4 more
doaj   +1 more source

Computing the demagnetizing tensor for finite difference micromagnetic simulations via numerical integration

open access: yes, 2015
In the finite difference method which is commonly used in computational micromagnetics, the demagnetizing field is usually computed as a convolution of the magnetization vector field with the demagnetizing tensor that describes the magnetostatic field of
Chernyshenko, Dmitri, Fangohr, Hans
core   +1 more source

Unveiling the Emergent Traits of Chiral Spin Textures in Magnetic Multilayers

open access: yesAdvanced Science, 2022
Magnetic skyrmions are topologically wound nanoscale textures of spins whose ambient stability and electrical manipulation in multilayer films have led to an explosion of research activities. While past efforts focused predominantly on isolated skyrmions,
Xiaoye Chen   +9 more
doaj   +1 more source

LaBonte's method revisited: An effective steepest descent method for micromagnetic energy minimization

open access: yes, 2013
We present a steepest descent energy minimization scheme for micromagnetics. The method searches on a curve that lies on the sphere which keeps the magnitude of the magnetization vector constant. The step size is selected according to a modified Barzilai-
Bance, Simon   +5 more
core   +2 more sources

Identification and manipulation of spin wave polarizations in perpendicularly magnetized synthetic antiferromagnets

open access: yesNew Journal of Physics, 2021
Interlayer exchange-coupled synthetic antiferromagnets (SAFs) have the combined advantages of both high frequency of antiferromagnets and easy detection of ferromagnets.
Xing Chen   +5 more
doaj   +1 more source

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