| 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
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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
Antiferromagnetic coupling between martensitic twin variants observed by magnetic resonance in Ni-Mn-Sn-Co films
Abstract
Magnetic properties of Ni46.0Mn36.8Sn11.4Co5.8/MgO(001) epitaxial thin film, which undergo a martensitic phase transformation from cubic austenitic phase to a twinned orthorhombic martensitic phase at 270 K, were studied by the magnetic resonance at the microwave frequency of 9.45 GHz. It was found that the single resonance line observed in the austenite splits into three lines in the martensitic phase. A theoretical approach was developed to show that the additional resonance lines are caused by the weak antiferromagnetic coupling of the ferromagnetic twin components across twin boundaries. Fitting of the experimental resonance lines to model gives an effective field of antiferromagnetic coupling of about 1.5 kOe, which is two or three orders of magnitude lower than in the conventional antiferromagnetic solids because the number of magnetic ions interacting antiferromagnetically through the twin boundary is much less than the total number of magnetic ions in the twin. This feature shows a strong resemblance between the submicron twinned martensite and artificial antiferromagnetic superlattices, whereby providing a distinctive insight into magnetism of the studied magnetic shape memory material.