Concept

Magnétostriction

Publications associées (185)

Reaching the magnetic anisotropy limit of a 3d metal atom

Harald Brune, Stefano Rusponi, Jan Gui-Hyon Dreiser, Pietro Gambardella, Fabio Donati, Luca Gragnaniello

Designing systems with large magnetic anisotropy is critical to realize nanoscopic magnets. Thus far, the magnetic anisotropy energy per atom in single-molecule magnets and ferromagnetic films remains typically one to two orders of magnitude below the theo ...

Amer Assoc Advancement Science2014

Sound Isolation and Giant Linear Nonreciprocity in a Compact Acoustic Circulator

Romain Christophe Rémy Fleury

Acoustic isolation and nonreciprocal sound transmission are highly desirable in many practical scenarios. They may be realized with nonlinear or magneto-acoustic effects, but only at the price of high power levels and impractically large volumes. In contra ...

American Association for the Advancement of Science2014

Energy dissipation in concentrated monodisperse colloidal suspensions of silica particles in polyethylene glycol

Véronique Michaud, Mathieu Soutrenon

Highly concentrated colloidal suspensions exhibit a discontinuous shear-thickening behaviour. The transition from a low to a high viscosity state is associated to a large energy dissipation. This effect could find applications in structural damping while t ...

Springer2014

Analytical determination of the constitutive behavior from micro-pillar testing: Application to a tempered martensitic steel

Philippe Spätig, Hans-Peter Seifert, Nazar Ilchuk

Micro-compression experiments were carried out on micro-pillars, with nominal diameter of 10 mu m and height 20 mu m, and fabricated from a high-chromium tempered martensitic steels developed for nuclear applications. An analytical method was proposed to c ...

2014

Space- and time-resolved Seebeck and Nernst voltages in laser-heated permalloy/gold microstructures

Jean-Philippe Ansermet, Dirk Grundler, Arndt Christian von Bieren

Thermoelectric effects in microstructured permalloy (Py) / gold (Au) wires are investigated using spatially and time-resolved measurements based on scanning focused laser heating. Supported by numerical simulations of the temperature distribution, we ident ...

American Institute of Physics2013

Magnetism and Atomic Scale Structure of Bimetallic Nanostructures at Surfaces

Sergio Vlaic

his thesis reports on the magnetic properties of bi- and tri-metallic nanostructures at surfaces. The main goal is to build the smallest nanostructure ferromagnetic at room temperature and the assembly of those structures in high density arrays. To this pu ...

EPFL2013

Strain-dependent magnetic configurations in manganite-titanate heterostructures probed with soft X-ray techniques

Harald Brune, Stefano Rusponi

We present a detailed study on the strain-induced magnetic domain structure of a (La,Sr)MnO3 thin film epitaxially grown on a BaTiO3 substrate through the use of polarization-dependent X-ray photoemission electron microscopy and X-ray absorption spectrosco ...

Springer2013

Magnetodynamical response of large-area close-packed arrays of circular dots fabricated by nanosphere lithography

Dirk Grundler

We report a combined experimental and theoretical study of the quasistatic hysteresis and dynamic excitations in large-area arrays of NiFe nanodisks forming a hexagonal lattice with the lattice constant of 390 nm. Arrays were fabricated by patterning a 20- ...

2013

The effect of magnetic anisotropy on the spin configurations of patterned La0.7Sr0.3MnO3 elements

André Bisig

We study the effect of magnetocrystalline anisotropy on the magnetic configurations of La0.7Sr0.3MnO3 bar and triangle elements using photoemission electron microscopy imaging. The dominant remanent state is a low energy flux-closure state for both thin (1 ...

Iop Publishing Ltd2013

Strain-Induced Ferromagnetism in Antiferromagnetic LuMnO3 Thin Films

Jonathan White

Single phase and strained LuMnO3 thin films are discovered to display coexisting ferromagnetic and antiferromagnetic orders. A large moment ferromagnetism (approximate to 1 mu(B)), which is absent in bulk samples, is shown to display a magnetic moment dist ...

American Physical Society2013

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