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Amorphous Sm–Ni–O nanoparticles produced by laser ablation were crystallized into the perovskite phase (SmNiO3) via in situ thermal treatments in the TEM. This study demonstrated that the initial Sm/Ni stoichiometry of the nanoparticles plays an important role during crystallization, as confirmed by analysis of high-resolution TEM images and by the increase in the Ni3+/Ni2+ ratio, a clear indicator of perovskite formation-measured by EELS.

Ce travail a pour objectif ultime de concevoir un dispositif capable de surveiller en temps réel l’endommagement d’une lime endodontique par analyse acoustique, afin d’alerter le chirurgien-dentiste en cas de risque imminent de rupture et de lui signaler la nécessité d’interrompre immédiatement son utilisation. Cette approche fondée sur l’émission acoustique est appliquée pour la première fois en endodontie. Cet article présente une première proposition de critère d’alarme acoustique.

Selected as an Editor’s Pick, this article uncovers unexpected interactions between two types of instabilities in hot plasmas and demonstrates, for the first time, the capability of an advanced simulation code to accurately model these phenomena in the cylindrical SPEKTRE experiment at IJL.

This work clarifies the actual conditions under which dynamic transformation occurs in steel during hot deformation. Using synchrotron X-ray diffraction, it demonstrates that conventional methods often overestimate both the extent and the temperature range of such transformations.

This paper highlights the extreme sensitivity of the itinerant magnetism of the Fe-sublattice to the presence of Mo in the crystal lattice of HfFe2. It sheds light on the strong coupling between lattice and spin degrees of freedom in Hf1-xMoxFe2 intermetallic compounds.

The kinetics complex and mechanisms of the hot corrosion of a superalloy for aeronautical applications were determined through accurate characterizations at the nanometric scale.

We have grown epitaxial GdVO3 thin films onto different substrates, and revealed that epitaxial strain engineering has a significant influence on the type of spin ordering and allowed tuning the antiferromagnetic transition temperature. This opens new routes for oxide based electronic devices.

This work evidences that the electrical properties of high entropy alloys can be tuned by the addition of a sixth elements. Depending on the nature and the concentration of this element, the temperature coefficient of resistance can be either positive, negative or close to zero.