| 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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Kakazei, Gn
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (8/8 displayed)
- 2019Probing the morphology of epitaxial Fe/MgO discontinuous multilayers by magnetometric techniquecitations
- 2018Activation parameters of conjugated polyaniline electrolyte via dielectric relaxation technique
- 2018Negative Magnetoresistance in Nanotwinned NiMnGa Epitaxial Filmscitations
- 2017Antiferromagnetic coupling between martensitic twin variants observed by magnetic resonance in Ni-Mn-Sn-Co filmscitations
- 2015Study of magnetoelastic and magnetocrystalline anisotropies in CoxN1-x nanowire arrayscitations
- 2011Isothermal structural transitions, magnetization and large piezoelectric response in Bi1-xLaxFeO3 perovskitescitations
- 2010Effect of Gd substitution on ferroelectric and magnetic properties of Bi4Ti3O12citations
- 2004Peculiar magnetic and electrical properties near structural percolation in metal-insulator granular layerscitations
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article
Peculiar magnetic and electrical properties near structural percolation in metal-insulator granular layers
Abstract
We study CoFe/Al2O3 multilayers, varying from granular to continuous structure with CoFe nominal thickness (10 Angstromless than or equal totless than or equal to18 Angstrom). Structural percolation takes place at t=t(c)approximate to18 Angstrom, changing from activated to metallic conductance. A sharp anomaly in ac coercivity of magneto-optical Kerr effect and in magnetization M by superconducting quantum interferometer device is found at t=t*approximate to17 Angstrom, interpreted as transition from superferromagnetism (by dipolar coupled CoFe clusters) to exchange ferromagnetism. Onset at t=t* of anisotropic magnetoresistance (AMR) is attributed to skew scattering of bandlike electrons within giant fractal clusters. These structures may cause the observed Barkhausen noises in M and AMR at tapproximate tot*, disappearing at t>t*. (C) 2004 American Institute of Physics.