| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Fangohr, Hans
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (11/11 displayed)
- 2020fmmgen
- 2018Proposal for a micromagnetic standard problem for materials with Dzyaloshinskii–Moriya interactioncitations
- 2016Resonant translational, breathing and twisting modes of pinned transverse magnetic domain wallscitations
- 2012Ultrahard magnetic nanostructurescitations
- 2010Fabrication and simulation of nanostructures for domain wall magnetoresistance studies on nickelcitations
- 2008Numerical investigation of domain walls in constrained geometriescitations
- 2007Geometrical multilayers: coercivity in magnetic 3-D nanostructurescitations
- 2007Analysis of magnetoresistance in arrays of connected nano-ringscitations
- 2007A systematic approach to multiphysics extensions of finite-element-based micromagnetic simulations: Nmagcitations
- 2006Magnetic anisotropy in the cubic Laves REFe2 intermetallic compoundscitations
- 2005Shape-induced anisotropy in antidot arrays from self-assembled templatescitations
Places of action
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article
Ultrahard magnetic nanostructures
Abstract
The performance of hard-magnetic nanostructures is investigated by analyzing the size and geometry dependence of thin-film hysteresis loops. Compared to bulk magnets, weight and volume are much less important, but we find that the energy product remains the main figure of merit down to very small features sizes. However, hysteresis loops are much easier to control on small length scales, as epitomized by Fe-Co-Pt thin films with magnetizations of up to 1.78 T and coercivities of up to 2.52 T. Our numerical and analytical calculations show that the feature size and geometry have a big effect on the hysteresis loop. Layered soft regions, especially if they have a free surface, are more harmful to coercivity and energy product than spherical inclusions. In hard-soft nanocomposites, an additional complication is provided by the physical properties of the hard phases. For a given soft phase, the performance of a hard-soft composite is determined by the parameter (Ms - Mh)/Kh.