| 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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Beleggia, Marco
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (12/12 displayed)
- 2019Optical property – composition correlation in noble metal alloy nanoparticles studied with EELScitations
- 2018Charging of carbon thin films in scanning and phase-plate transmission electron microscopycitations
- 2017The substrate effect in electron energy-loss spectroscopy of localized surface plasmons in gold and silver nanoparticlescitations
- 2017The substrate effect in electron energy-loss spectroscopy of localized surface plasmons in gold and silver nanoparticlescitations
- 2015Effect of Magnetostatic Interactions on Twin Boundary Motion in NiMnGa Magnetic Shape Memory Alloycitations
- 2014Interferometric methods for mapping static electric and magnetic fieldscitations
- 2014Magnetic Imaging with a Novel Hole-Free Phase Platecitations
- 2014Towards quantitative off-axis electron holographic mapping of the electric field around the tip of a sharp biased metallic needlecitations
- 2010Near-Curie magnetic anomaly at the Ni/C interface observed by Electron Holographycitations
- 2010Dynamical Response of Catalytic Systems in a CS Corrected Environmental Transmission Electron Microscope
- 2007Polaron melting and ordering as key mechanisms for colossal resistance effects in manganites.citations
- 2006Quantitative shadow technique for the investigation of magnetic domain wall widthscitations
Places of action
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article
Near-Curie magnetic anomaly at the Ni/C interface observed by Electron Holography
Abstract
We analyze with electron holography carried out in a transmission electron microscope the near-Curie behavior of magnetism at the edge of a Nickel thin film coated with Carbon. In-situ experiments with finely controlled variations of the sample temperature reveal an anomaly in the ferromagnetic to paramagnetic phase transition when the film temperature is a few degrees above the nominal Curie point. We interpret the anomaly as a strain-induced spin reorientation transition triggered by the differential thermal expansion of Carbon and Nickel. We present a model that quantitatively reproduces the main features of the observed signal. The model is developed in terms of an anisotropic, temperature dependent exchange coupling between the Nickel moments at the Carbon interface that favors their vertical alignment at low temperatures.