Results 41 to 50 of about 7,578 (209)

Asymmetric Hysteresis Loops in Structured Ferromagnetic Nanoparticles with Hard/Soft Areas

open access: yesNanomaterials, 2021
Horizontally shifted and asymmetric hysteresis loops are often associated with exchange-biased samples, consisting of a ferromagnet exchange coupled with an antiferromagnet.
Joscha Detzmeier   +3 more
doaj   +1 more source

A systematic approach to multiphysics extensions of finite-element-based micromagnetic simulations: Nmag

open access: yes, 2007
Extensions of the basic micromagnetic model that include effects such as spin-current interaction, diffusion of thermal energy or anisotropic magnetoresistance are often studied by performing simulations that use case-specific ad-hoc extensions of widely
Bordignon, G.   +3 more
core   +1 more source

Sub-nanosecond signal propagation in anisotropy engineered nanomagnetic logic chains [PDF]

open access: yes, 2014
Energy efficient nanomagnetic logic (NML) computing architectures propagate and process binary information by relying on dipolar field coupling to reorient closely-spaced nanoscale magnets. Signal propagation in nanomagnet chains of various sizes, shapes,
Alam, Mohmmad T.   +15 more
core   +2 more sources

Skyrmion Formation in Nanodisks Using Magnetic Force Microscopy Tip

open access: yesNanomaterials, 2021
We demonstrated numerically the skyrmion formation in ultrathin nanodisks using a magnetic force microscopy tip. We found that the local magnetic field generated by the magnetic tip significantly affects the magnetization state of the nanodisks and leads
Mateusz Zelent   +11 more
doaj   +1 more source

Magnetic Force Microscopy Signatures of Higher‐Order Skyrmions and Antiskyrmions

open access: yesAdvanced Functional Materials, EarlyView.
Magnetic force microscopy operated under vacuum conditions enables the qualitative identification of higher‐order skyrmions and antiskyrmions in Co/Ni multilayers at room temperature. Distinct stray‐field contrast signatures arise from vertical Bloch lines and complex domain‐wall configurations.
Sabri Koraltan   +8 more
wiley   +1 more source

Vision for unified micromagnetic modeling (UMM) with Ubermag

open access: yesAIP Advances
Scientists who want to use micromagnetic simulation packages, need to learn how to express the micromagnetic problem of interest in a “language” such as a configuration file, script or GUI-clicks that the simulation software understands.
Hans Fangohr   +5 more
doaj   +1 more source

Spin-wave-induced lateral temperature gradient in a YIG thin film/GGG system excited in an ESR cavity

open access: yes, 2018
Lateral thermal gradient of an yttrium iron garnet (YIG) film under the microwave application in the cavity of the electron spin resonance system (ESR) was measured at room temperature by fabricating a Cu/Sb thermocouple onto it.
Ando, Yuichiro   +4 more
core   +1 more source

Domain Wall Rebounds Driven by Competing Entropic and Spin‐Transfer Torques in Cylindrical Nanowires

open access: yesAdvanced Functional Materials, EarlyView.
Domain‐wall motion in cylindrical magnetic nanowires driven by nanosecond current pulses. Low current densities efficiently displace domain walls, whereas higher currents cause rebound at the wire ends. The effect results from the interplay between spin‐transfer torque and thermally induced processes, highlighting the role of thermal gradients in ...
Elias Saugar   +11 more
wiley   +1 more source

Fidimag – A Finite Difference Atomistic and Micromagnetic Simulation Package

open access: yesJournal of Open Research Software, 2018
Fidimag is an open-source scientific code for the study of magnetic materials at the nano- or micro-scale using either atomistic or finite difference micromagnetic simulations, which are based on solving the Landau-Lifshitz-Gilbert equation. In addition,
Marc-Antonio Bisotti   +6 more
doaj   +1 more source

Modelling compensated antiferromagnetic interfaces with MuMax3

open access: yes, 2017
We show how compensated antiferromagnetic spins can be implemented in the micromagnetic simulation program MuMax3. We demonstrate that we can model spin flop coupling as a uniaxial anisotropy for small canting angles and how we can take into account the ...
De Clercq, Jonas   +2 more
core   +1 more source

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