Results 41 to 50 of about 13,083 (302)

Asymmetric Reversal in Inhomogeneous Magnetic Heterostructures [PDF]

open access: yesPhysical Review Letters, 2006
Asymmetric magnetization reversal is an unusual phenomenon in antiferromagnet / ferromagnet (AF/FM) exchange biased bilayers. We investigated this phenomenon in a simple model system experimentally and by simulation assuming inhomogeneously distributed interfacial AF moments. The results suggest that the observed asymmetry originates from the intrinsic
Li, Zhi-Pan   +6 more
openaire   +6 more sources

ATOMISTIC MODELLING OF MAGNETISATION REVERSAL PROCESSES IN RECORDING MEDIA [PDF]

open access: yes, 2013
Magnetic materials used in the magnetic recording industry have been developed for several decades. However, since the areal recording desity is increased to around 1 Tbit/in2,some new physical challenges have become clear: particularly the need of using
Fan, Weijia
core  

Fostering Innovation: Streamlining Magnetocaloric Materials Research by Digitalization

open access: yesAdvanced Engineering Materials, EarlyView.
Magnetocaloric cooling (MCE) is an environmentally friendly refrigeration method with great potential. Optimizing MCE materials involves the preparation and screening of large quantities of samples, which in turn generates a large amount of data. A digitalization approach is presented that uses ontologies, knowledge graphs, and digital workflows to ...
Simon Bekemeier   +17 more
wiley   +1 more source

Non-monotonic probability of thermal reversal in thin-film biaxial nanomagnets with small energy barriers

open access: yesAIP Advances, 2017
The goal of this paper is to investigate the short time-scale, thermally-induced probability of magnetization reversal for an biaxial nanomagnet that is characterized with a biaxial magnetic anisotropy.
N. Kani, A. Naeemi, S. Rakheja
doaj   +1 more source

Earth’s magnetic field is probably not reversing [PDF]

open access: yesProceedings of the National Academy of Sciences, 2018
SignificanceEarth’s magnetic field is generated in Earth’s convecting liquid iron outer core and protects Earth’s surface from harmful solar radiation. The field has varied on different timescales throughout geological history, and these variations reflect changes deep within the Earth.
Maxwell Brown   +4 more
openaire   +7 more sources

An Experimental High‐Throughput Approach for the Screening of Hard Magnet Materials

open access: yesAdvanced Engineering Materials, EarlyView.
An entire workflow for the high‐throughput characterization and analysis of compositionally graded magnetic films is presented. Characterization protocols, data management tools and data analysis approaches are illustrated with test case Sm(Fe, V)12 based films.
William Rigaut   +16 more
wiley   +1 more source

Experiment-based thermal micromagnetic simulations of the magnetization reversal for ns-range clocked nanomagnetic logic

open access: yesAIP Advances, 2017
Extensive thermal micromagnetic simulations, based on experimental data and parameters, were performed to investigate the magnetization reversal in Co/Pt nanomagnets with locally reduced perpendicular anisotropy on the nanosecond range.
Grazvydas Ziemys   +4 more
doaj   +1 more source

Ferroelectricity in Antiferromagnetic Wurtzite Nitrides

open access: yesAdvanced Functional Materials, EarlyView.
We establish MnSiN2${\rm MnSiN}_2$ and MnGeN2${\rm MnGeN}_2$ as aristotypes of a new multiferroic wurtzite family that simultaneously exhibits ferroelectricity and antiferromagnetism with altermagnetic spin splitting. By strategically substituting alkaline‐earth metals, we predict new materials with coexisting switchable polarization, spin texture, and
Steven M. Baksa   +3 more
wiley   +1 more source

Micromagnetic simulation for the magnetization reversal process of Nd-Fe-B hot-deformed nanocrystalline permanent magnets

open access: yesAIP Advances, 2017
We numerically demonstrated the magnetization reversal process inside a hot-deformed nanocrystalline permanent magnet. We performed large-scale micromagnetics simulation based on the Landau–Lifshitz–Gilbert equation with 0.1 billion calculation cells ...
Hiroshi Tsukahara   +4 more
doaj   +1 more source

Energy Efficient Control of Ultrafast Spin Current to Induce Single Femtosecond Pulse Switching of a Ferromagnet

open access: yesAdvanced Science, 2020
New methods to induce magnetization switching in a thin ferromagnetic material using femtosecond laser pulses without the assistance of an applied external magnetic field have recently attracted a lot of interest.
Quentin Remy   +9 more
doaj   +1 more source

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