Results 51 to 60 of about 2,998,876 (168)

Configurational anisotropy in single-domain and pseudosingle-domain grains of magnetite [PDF]

, 2006
In classical domain theory, single-domain (SD) grains change their magnetization by coherent rotation, where the energy barrier to domain reversal is provided by the magnetocrystalline anisotropy or by shape anisotropy for elongated grains.
Williams, W., Paterson, G.A., Muxworthy, A., Paterson, Greig A., Williams, Wyn; id_orcid, Muxworthy, Adrian R., Muxworthy, Adrian R, Paterson, Greig A, Williams, Wyn   +8 more
core   +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

Domain wall creep motion dynamics in CoFeB nanowire strips of different thicknesses using micromagnetic simulation approach [PDF]

ITM Web of Conferences
Field-induced domain wall motion on thin magnetic films with perpendicular anisotropy has long been attributed with the universal creep theory, in which the domain wall (DW) is able to experience a slow-moving motion with driving fields below the ...
Nugraha Raditya, Djuhana Dede, Kurniawan Candra   +2 more
doaj   +1 more source

Finite Length Effects on Switching Mechanisms in Chains of Magnetic Particles

Magnetochemistry, 2020
Periodic systems of magnetic nanoparticles are now of interest as they support GHz spin waves. Their equilibrium configurations, switchable with the external magnetic field, are crucial for such applications.
Dominika Kuźma, Piotr Zieliński
doaj   +1 more source

Spatially-resolved dynamic sampling of different phasic magnetic resonances of nanoparticle ensembles in a magnetotactic bacterium Magnetospirillum magnetotacticum

New Journal of Physics, 2023
Nanoscaled magnetic particle ensembles are promising building blocks for realizing magnon based binary logic. Element-specific real-space monitoring of magnetic resonance modes with sampling rates in the GHz regime is imperative for the experimental ...
Thomas Feggeler, Johanna Lill, Damian Günzing, Ralf Meckenstock, Detlef Spoddig, Maria V Efremova, Sebastian Wintz, Markus Weigand, Benjamin W Zingsem, Michael Farle, Heiko Wende, Katharina J Ollefs, Hendrik Ohldag   +12 more
doaj   +1 more source

Perspective: Quantum Computing on Magnetic Racetrack

Advanced Electronic Materials, EarlyView.
Magnetic domain walls emerge as mobile qubits on quantum racetracks, where chirality encodes quantum information and current‐driven motion enables flying‐qubit functionality. This Perspective outlines the physical principles, gate mechanisms, material requirements, and experimental roadmap for realizing scalable quantum computing with magnetic textures,
Ji Zou, Jelena Klinovaja, Daniel Loss
wiley   +1 more source

Analysis of magnetoresistance in arrays of connected nano-rings

, 2007
We study the anisotropic magnetoresistance (AME) of a 2D periodic square array of connected permalloy rings with periodicity of 1m combining experimental and computational techniques.
Metlushko, V.V., Bordignon, G., Zhukov, A.A., Franchin, M., Fangohr, H., de Groot, P.A.J., Fischbacher, T., Zimmermann, J.P.   +7 more
core   +1 more source

Harnessing Digital Microstructure for Simulation‐Guided Optimization of Permanent Magnets

Advanced Intelligent Discovery, EarlyView.
An experimental‐to‐computational workflow is presented that transforms experimental 3D focused ion beam‐scanning electron microscopy data into a simulation‐ready digital microstructure for multiphase functional materials. Using heavy‐rare‐earth‐free Nd–Fe–B magnets as a model system, the approach quantifies grain connectivity across complex secondary ...
Nikita Kulesh, Anton Bolyachkin, Hajime Nakamura, Tadakatsu Ohkubo, Hossein Sepehri‐Amin   +4 more
wiley   +1 more source

magnum.fe: A micromagnetic finite-element simulation code based on FEniCS

, 2013
We have developed a finite-element micromagnetic simulation code based on the FEniCS package called magnum.fe. Here we describe the numerical methods that are applied as well as their implementation with FEniCS.
Claas Abert, Lukas Exl, Abert, Claas, Bruckner, Florian, Suess, Dieter, Exl, Lukas, Andre Drews, Florian Bruckner, Drews, André, Dieter Suess   +9 more
core   +1 more source

Exploiting Ferroelectric and Spintronic Dynamics for Neural Network Computation

Advanced Intelligent Systems, EarlyView.
Ferroelectric and spintronic devices, relying on the control of polarization and magnetization, offer intrinsically fast, durable, energy‐efficient, and low‐latency building blocks for analog in‐memory computing. The hysteretic dynamics of an order parameter are leveraged to provide nonvolatile, multistate memory and nonlinear switching. Brain‐inspired
Dashiell Harrison, Kevin Nadaud, Josquin Harrison, Guillaume F. Nataf, Laura Bégon‐Lours   +4 more
wiley   +1 more source