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Publications

Affichage des publications 2131 à 2140 sur 4017 au total

Materials Science

Study of the first paramagnetic to ferromagnetic transition in as prepared samples of Mn–Fe–P–Si magnetocaloric compounds prepared by different synthesis routes

Magnetocaloric materials with composition of Mn 1.3 Fe 0.65 P 0.5 Si 0.5 have been prepared by ball milling and solid-state reaction methods and consolidated using powder annealing, and conventional and spark plasma sintering. Magnetic and…

A. Bartok, M. Kustov, L.F. Cohen, A. Pasko, K. Zehani, L. Bessais, F. Mazaleyrat, M. Lobue

Journal of Magnetism and Magnetic Materials -

Materials Science

Optimization of multiroute synthesis for polyaniline-barium ferrite composites

A comparative study of physicochemical and magnetic properties of Polyaniline-BaFe12O19 composites prepared by Solid-Based Polymerization (SBP) and by Aqueous-Based Polymerization (ABP) is carried out. The composites obtained by the latter method…

Tayssir Ben Ghzaiel, Wadia Dhaoui, Alexander Pasko, Frédéric Mazaleyrat

Materials Chemistry and Physics -

Engineering Sciences

Influence of repetitions of short-circuit conditions on IGBT lifetime

The paper deals with the behaviour of PT and NPT IGBTs under repetitive short-circuit operations. The repetition of these severe working conditions is responsible for one mode of devices ageing and results unavoidably in the components failures. A…

Frédéric Saint-Eve, Stéphane Lefebvre, Zoubir Khatir

EPE Journal - European Power Electronics and Drives -

Vegetal Biology

Conception d'un Radar harmonique pour étudier la dispersion du Carpocapse des pommes

Cet article présente les caractéristiques d'un radar harmonique utilisé pour étudier le déplacement du Carpocapse des pommes. Ce radar est constitué d'un module émission/réception de faible coût (inférieur à 1500 euros) associé à un transpondeur…

Franck Daout, Françoise Schmitt, Thomas Delattre

Journées du GDR ondes 2451 "interférences d'ondes" Assemblée générale -

Electric power

Magnetic Stoppers on Single Beam Piezoelectric Energy Harvesting

The single beam structure has been long used in piezoelectric energy harvesting to harvest the vibrations of the circumstances. One of the critical defects of the structure is its narrow band of operating frequency. Many propose mechanical stoppers,…

Y. S. Shih, Dejan Vasic, François Costa, W. J. Wu

Physics Procedia -