Results 51 to 60 of about 2,072 (165)

Micromagnetics of nanostructures [PDF]

Journal of Magnetism and Magnetic Materials, 2003
The results of numerical simulation of equilibrium magnetization patterns and magnetization reversal in flat cylindrical and elliptical particles of the soft magnetic type are discussed. It is found that the bending state originates in these particles due to instability of quasi-uniform magnetization at large enough in-plane sizes. Similar states exist
Usov, N. A., Grebenshchikov, Yu. B., Kurkina, L. G., Chang, Ching-Ray, Wei, Zung-Hang   +4 more
openaire   +2 more sources

User interfaces for computational science: A domain specific language for OOMMF embedded in Python

AIP Advances, 2017
Computer simulations are used widely across the engineering and science disciplines, including in the research and development of magnetic devices using computational micromagnetics.
Marijan Beg, Ryan A. Pepper, Hans Fangohr   +2 more
doaj   +1 more source

Laser‐Induced Rashba Spin‐Orbit Torques in Multiferroic Semiconductor (Ge,Mn)Te

Advanced Science, EarlyView.
Femtosecond optical excitation generates two distinct effective spin–orbit torques in the multiferroic semiconductor (Ge,Mn)Te. Photoinduced holes drive coherent magnetization precession through a subpicosecond shift of the easy axis, while changes in ferroelectric sublattice displacements modify magnetic ordering via the Rashba interaction.
Zeynab Sadeghi, Tomáš Ostatnický, Eva Schmoranzerová, Jozef Kimák, Dominik Kriegner, Helena Reichlová, Lukáš Nádvorník, Gunther Springholz, J. Hugo Dil, Juraj Krempasky, Petr Němec   +10 more
wiley   +1 more source

On a sharp Poincare-type inequality on the 2-sphere and its application in micromagnetics [PDF]

, 2019
The main aim of this note is to prove a sharp Poincare-type inequality for vector-valued functions on S2 that naturally emerges in the context of micromagnetics of spherical thin ...
Slastikov V., Di Fratta G., Zarnescu A.
core   +2 more sources

Advanced Modeling and Simulation of Multilayer Spin–Transfer Torque Magnetoresistive Random Access Memory with Interface Exchange Coupling

Micromachines
In advancing the study of magnetization dynamics in STT-MRAM devices, we employ the spin drift–diffusion model to address the back-hopping effect. This issue manifests as unwanted switching either in the composite free layer or in the reference layer in ...
Mario Bendra, Roberto Lacerda de Orio, Siegfried Selberherr, Wolfgang Goes, Viktor Sverdlov   +4 more
doaj   +1 more source

Normal modes description of nonlinear ferromagnetic resonance for magnetic nanodots

AIP Advances, 2022
The spatially-inhomogeneous magnetization dynamics in a cylindrical magnetic nanodot driven by ac spin-torque is analyzed. To this end, the Landau-Lifshitz-Gilbert-Slonczewski equation is reformulated as a system of coupled nonlinear ordinary ...
S. Perna, F. Bruckner, C. Serpico, D. Suess, M. d’Aquino   +4 more
doaj   +1 more source

Enhanced High Dimensionality and the Information Processing Capacity in Interfered Spin Wave‐Based Reservoir Computing, Achieved With Eight Detectors

Advanced Electronic Materials, EarlyView.
Physical reservoir computing (PRC) based on spin wave interference has demonstrated high computational performance, yet room for improvement remains. In this study, we fabricated this concept PRC with eight detectors and evaluated the impact of the number of detectors using a chaotic time series prediction task.
Sota Hikasa, Wataru Namiki, Daiki Nishioka, Maki Nishimura, Ryo Iguchi, Kazuya Terabe, Takashi Tsuchiya   +6 more
wiley   +1 more source

Controlling the Skyrmion Density and Size for Quantized Convolutional Neural Network

IEEE Access
The exceptional properties of skyrmion devices, including their miniature size, topologically protected nature, and low current requirements, render them highly promising for energy-efficient neuromorphic computing applications.
Aijaz H. Lone, Arnab Ganguly, Hanrui Li, Nazek El-Atab, Gianluca Setti, Gobind Das, and Hossein Fariborzi   +6 more
doaj   +1 more source

Stable Magnetic Nanodomains Engineered Via Ga+‐ion Irradiation For Deterministic Sequential Switching

Advanced Electronic Materials, EarlyView.
Tiny magnetic regions separated by domain walls can store data, but controlling them precisely is difficult. We use focused ion beams to create nanoscale “anisotropy wells” that pin these walls from both sides. This bidirectional pinning holds domains stable in either direction, even with no field applied.
Gijs W.A. Simons, Rik F.J. van Haren, Bert Koopmans   +2 more
wiley   +1 more source

Micromagnetics and Multiscale Hysteresis Simulations of Permanent Magnets [PDF]

, 2023
Confronting the unveiled sophisticated multiscale structural and physical characteristics of hysteresis simulation of permanent magnets, notably samarium-cobalt (Sm-Co) alloy, a novel scheme is proposed linking physics-based micromagnetics on the ...
Kühn, Patrick, Fathidoost, Mozhdeh, Yang, Yangyiwei, Xu, Bai-Xiang   +3 more
core   +1 more source