Results 71 to 80 of about 2,072 (165)

Modified Static Hysteresis Simulation Method for Electrical Equipment with Silicon Steel Core

Zhongguo dianli
Compared to traditional hysteresis models like Preisach and Jiles-Atherton (J-A), the micromagnetic Landau-Lifshitz-Gilbert (LLG) equation offers advantages such as clearer physical interpretation and higher simulation accuracy.
Ren LIU, Yu ZENG, Anlong HU, Bo TANG
doaj   +1 more source

Modeling the collective magnetic behavior of highly-packed arrays of multi-segmented nanowires

New Journal of Physics, 2016
A powerful model to evaluate the collective magnetic response of large arrays of segmented nanowires comprising two magnetic segments of dissimilar coercivity separated by a non-magnetic spacer is introduced.
S Agramunt-Puig, N Del-Valle, E Pellicer, J Zhang, J Nogués, C Navau, A Sanchez, J Sort   +7 more
doaj   +1 more source

Recent progress of the exchange bias based on 2D van der Waals ferromagnet

InfoScience, EarlyView.
Ultrathin magnetic materials could help make smaller, energy‐efficient memories, but their magnetic states must remain stable and controllable. This review brings together recent research on exchange bias, a magnetic pinning effect in layered materials, and explains how interfaces and electrical, thermal or mechanical controls can tune it, with optical
Wajahat Ali, Shaojie Hu
wiley   +1 more source

Stochastic thermodynamics of micromagnetics

Journal of Statistical Mechanics: Theory and Experiment
Abstract In this work, we study the stochastic thermodynamics of micro-magnetic systems. We first formulate the stochastic dynamics of micro-magnetic systems by incorporating noises into the Landau–Lifshitz (LL) equation, which describes the irreversible and deterministic dynamics of magnetic moments. The resulting stochastic LL equation
Ding, Mingnan, Wu, Jun, Xing, Xiangjun
openaire   +3 more sources

Combined Molecular Dynamics and Micromagnetic Modelling of Nanocomposite Permanent Magnet Particle Arrangement and Properties

Magnetism
Nanocomposite rare-earth permanent magnets composed of exchange-coupled hard magnetic nanoparticles offer a promising route toward high-performance, rare-earth-efficient magnet technologies.
Nikolaos Maniotis, Nikolaos Vordos, Michael Maragakis   +2 more
doaj   +1 more source

Template‐free tuning of magnetic nanoparticle self‐assemblies in response to external electric and magnetic fields

Responsive Materials, EarlyView.
Electrostatically charged aerosol magnetic nanoparticles enable template‐free self‐assembly of nanochains with tunable length and spacing by adjusting electric‐to‐magnetic field ratios. Lower electric fields favor the self‐assembly of longer and more spatially separated chains, while higher electric fields promote a uniform nanoparticle deposition and ...
Mehran Sedrpooshan, Alexander Omelyanchik, Pierfrancesco Maltoni, Davide Peddis, Adam M. Burke, Maria E. Messing, Rasmus Westerström   +6 more
wiley   +1 more source

Domain‐Wall Circulation Gating and Pinning via Compositional Engineering of Cylindrical Nanowires

Small, EarlyView.
Cylindrical magnetic nanowires offer a promising platform for future three‐dimensional spintronic devices. By strategically engineering nanometer‐scale chemical modulations, a novel circulation gate is established to control domain wall propagation.
Laura Álvaro‐Gómez, Claudia Fernández‐González, Sandra Ruiz‐Gómez, Nicolas Mille, Jean Christophe Toussaint, Rachid Belkhou, Michael Foerster, Eva Pereiro, Lucía Aballe, Núria Bagués, Christophe Thirion, Daria Gusakova, Aurelien Masseboeuf, Olivier Fruchart, Lucas Pérez   +14 more
wiley   +1 more source

Homogenization of micromagnetics large bodies [PDF]

ESAIM: Control, Optimisation and Calculus of Variations, 2004
The author considers an homogenization problem for the micromagnetic energy functional. In particular the integral representation for the homgenized limit of the family of energies \[ \mathcal{E}(m) = \int_\Omega \varphi \biggl(x,\frac{x}{\varepsilon},m(x)\biggr)\,dx - \int_\Omega h_\varepsilon(x)m(x)\, dx + \frac{1}{2} \int_{\mathbb R^3}| \nabla u| ^2
openaire   +2 more sources

Micromagnetic modelling and multipole expansions from Micromagnetic Tomography

, 2021
Micromagnetic Tomography (MMT) is a technique that combines X-ray micro tomography and scanning magnetometry data to numerically invert the surface magnetic signal for the magnetic potential of individual magnetic grains via their spherical harmonic expansion [1]. The dipole and higher order multipole moment solutions are uniquely determined, which has
David Cortés-Ortuño, Karl Fabian, Lennart de Groot   +2 more
openaire   +1 more source

A self-consistent spin-diffusion model for micromagnetics

Scientific Reports, 2016
We propose a three-dimensional micromagnetic model that dynamically solves the Landau-Lifshitz-Gilbert equation coupled to the full spin-diffusion equation.
Claas Abert, Michele Ruggeri, Florian Bruckner, Christoph Vogler, Aurelien Manchon, Dirk Praetorius, Dieter Suess   +6 more
doaj   +1 more source