Concept

Ferrite (céramique ferromagnétique)

Publications associées (283)

An Origami-Inspired Reconfigurable Suction Gripper for Picking Objects with Variable Shape and Size

Aude Billard, Jamie Paik, Zhenishbek Zhakypov

Gripper adaptability to handle objects of different shape and size brings high flexibility to manipulation. Gripping flat, round, or narrow objects poses challenges to even the most sophisticated robotic grippers. Among various gripper technologies, the va ...

2018

Element Selective Probe of the Ultra-Fast Magnetic Response to an Element Selective Excitation in Fe-Ni Compounds Using a Two-Color FEL Source

Eugenio Ferrari, Primoz Rebernik Ribic, David Gauthier

The potential of the two-color mode implemented at the FERMI free-electron laser (FEL) source for pumping and probing selectively different atomic species has been demonstrated by time-resolved scattering experiments with permalloy (FeNi alloy) and NiFe2O4 ...

Mdpi Ag2017

Soft Magnets Implementation using a Stereolithography-based 3D Printer

Yves Perriard, Paolo Germano, Cécile Gisèle Aimée Jeannine Cuchet, Augustin Muster

A wide part of the proposed paper is devoted to designing soft magnets using a stereolithography 3D printer. A state of the art on soft magnetic materials is carried out together with an overview of the existing printing technologies to obtain complex non- ...

2017

High-Temperature Ferrimagnetism with Large Coercivity and Exchange Bias in the Partially Ordered 3d/5d Hexagonal Perovskite Ba2Fe1.12Os0.88O6

Philip Pattison

Double perovskite oxides A(2)BB'O-6 combining 3d and 4d or 5d transition metal ions at the B and B' sites feature a variety of magnetic and magneto-electric properties. Targeting Ba2FeOsO6, we synthesized powder samples of nonstoichiometric Ba2Fe1.12Os0.88 ...

American Chemical Society2017

Modelling Hysteresis of Soft Core Materials using Permeance-Capacitance Analogy for Transient Circuit Simulations

Drazen Dujic, Min Luo, Jost Allmeling

Magnetic components using soft core materials are widely used in power electronic converters. The hysteresis effect of the material leads to power loss and harmonic distortion. If this effect can be modelled in system-level time-domain simulation, the perf ...

Ieee2017

Very-High-Speed Permanent Magnet Motors: Mechanical Rotor Stresses Analytical Model

Yves Perriard, Douglas Martins Araujo, Guillaume Paul-André Burnand

In the context of the development of a 500’000 rpm miniaturized permanent magnet motor, a 3D analytical model for the assessment of mechanical stresses is presented. The significant mechanical stresses and thermal constraints encountered at such speeds are ...

2017

Topological spin-hedgehog crystals of a chiral magnet as engineered with magnetic anisotropy

Henrik Moodysson Rønnow, Jonathan White

We report the engineering of spin-hedgehog crystals in thin films of the chiral magnet MnGe by tailoring the magnetic anisotropy. As evidenced by neutron scattering on films with different thicknesses and by varying a magnetic field, we can realize continu ...

2017

Structural Reversibility and Nickel Particle stability in Lanthanum Iron Nickel Perovskite-Type Catalysts

Davide Ferri, Oliver Kröcher, Debora Foppiano, Andre Heel

Perovskite-type oxides have shown the ability to reversibly segregate precious metals from their structure. This reversible segregation behavior was explored for a commonly used catalyst metal, Ni, to prevent Ni sintering, which is observed on most catalys ...

Wiley-V C H Verlag Gmbh2017

Study and characterization of soft magnetic materials for beam intensity monitors at CERN

Heinrich Hofmann, Silvia Aguilera Murciano

At CERN, the circulating beam current measurement is provided by two types of transformers, the DC Current Transformer (DCCT) and the Fast Beam Current Transformer (FBCT). Each transformer is built based on toroidal cores made from a magnetic material. Dep ...

Iop Publishing Ltd2017

Domain-wall conduction in ferroelectric BiFeO3 controlled by accumulation of charged defects

Dragan Damjanovic

Mobile charged defects, accumulated in the domain-wall region to screen polarization charges, have been proposed as the origin of the electrical conductivity at domain walls in ferroelectric materials. Despite theoretical and experimental efforts, this sce ...

Nature Publishing Group2017

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