| 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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Vopson, Melvin Marian
University of Portsmouth
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (10/10 displayed)
- 2020Diamagnetic coupling for magnetic tuning in nano-thin filmscitations
- 2019Sub-lattice polarization states in anti-ferroelectrics and their relaxation processcitations
- 2019Evidence of substrate roughness surface induced magnetic anisotropy in Ni80Fe20 flexible thin filmscitations
- 20171D core-shell magnetoelectric nanocomposites by template-assisted liquid phase depositioncitations
- 2012Probing the local strain-mediated magnetoelectric coupling in multiferroic nanocomposites by magnetic field-assisted piezoresponse force microscopycitations
- 2012Nanostructured p-n junctions for kinetic-to-electrical energy conversioncitations
- 2005Preparation of high moment CoFe films with controlled grain size and coercivitycitations
- 2005Deposition of polycrystalline thin films with controlled grain sizecitations
- 2005Grain size effects in metallic thin films prepared using a new sputtering technology
- 2004Novel sputtering technology for grain-size controlcitations
Places of action
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article
Evidence of substrate roughness surface induced magnetic anisotropy in Ni80Fe20 flexible thin films
Abstract
Experimental and computational evidence of a surface roughness induced magnetic anisotropy in NiFe thin films coated onto substrates of various surface roughnesses is reported. Magnetic coercive fields of 15 nm NiFe thin films coated on substrates with approximately 7 nm average roughness were remarkably 233% larger than identical thin films coated onto smooth substrates with < 1 nm average roughness. The NiFe films coated onto rough substrates developed hard and easy axes, normally non-existent in NiFe Permalloy. A linear correlation of the incline angles of the hard axis hysteresis loops to the average roughness values of the individual substrates was observed, with 99% correlation level. Using a modified micromagnetics theory that incorporates the effects of surface roughness, it is shown the observed magnetic anisotropy arises due to the spatial anisotropy of the surface roughness, resulting in an effective in-plane uniaxial magnetic anisotropy with energy density up to 15 kJ/m3.