Concept

Aimant AlNiCo

Publications associées (67)

Microwave spin-torque excitation in a template-synthesized nanomagnet

A microwave-compatible lithography-free process is shown to allow the electrical contact of a single nanometric spin valve grown by template synthesis. The complex spin dynamics of a single nanomagnet is revealed by resonant microwave current excitations, ...

2009

Magnetic forces produced by rectangular permanent magnets in static microsystems

Hubert Girault, Joël Stéphane Rossier, Anne-Laure Gassner, Mélanie Abonnenc, Hong-Xu Chen

Finite element numerical simulations were carried out in 2D geometries to map the magnetic field and force distribution produced by rectangular permanent magnets as a function of their size and position with respect to a microchannel. A single magnet, two ...

2009

Magnetic anisotropy of paramagnetic and ferromagnetically ordered state of single crystal BaVSe3

László Forró, Helmuth Berger, Ana Akrap

Anisotropic magnetism of single crystal BaVSe3 was Studied for the first time by the combination of the susceptibility and torque methods. As reported previously for polycrystalline sample, BaVSe3 undergoes ferromagnetic ordering below 43 K. Well above fer ...

2008

Near-zero-moment ferromagnetism in the semiconductor SmN

Simon Granville, Harry Joseph Trodahl

The magnetic behavior of SmN has been investigated in stoichiometric polycrystalline films. All samples show ferromagnetic order with Curie temperature (T-C) of 27 3 K, evidenced by the occurrence of hysteresis below T-C. The ferromagnetic state is charact ...

2008

Ordering of dipeptide chains on cu surfaces through 2D cocrystallization

Klaus Kern, Magalí Alejandra Lingenfelder, Giovanni Costantini

We report on the induced ordering of dispersed chiral diphenylalanine (Phe-Phe) chains grown on the anisotropic Cu(110) and isotropic Cu(100) surfaces. Scanning tunneling microscopy (STM) data reveal that 2D extended hybrid molecular motifs can be fabricat ...

2007

A New Standstill Position Detection Technique for Nonsalient Permanent-Magnet Synchronous Motors Using the Magnetic Anisotropy Method

Yves Perriard, Miroslav Markovic, Jan Persson

This paper describes a new method to estimate the standstill position of permanent-magnet synchronous motors (PMSMs). The method is based on the anisotropic properties of permanent magnets and is therefore referred to as a magnetic anisotropy method (MAM). ...

2007

Permalloy thin films exchange-coupled to arrays of stencilled cobalt islands

Jürgen Brugger, Marc Antonius Friedrich van den Boogaart

Patterned magnetic thin films are of interest due to the potential for new technological applications and also because of their modified physical behaviour as the lateral dimensions are reduced. The functionality of patterned films can be intelligently des ...

2006

Piezoelectric anisotropy and free energy instability in classic perovskites

Marko Budimir

Several members of the perovskite family are investigated: the temperature dependence of dielectric, elastic, piezoelectric and coupling coefficients of KNbO3 in its orthorhombic ferroelectric phase is determined experimentally; the values of dielectric st ...

EPFL2006

The effect of point defects on the martensitic phase transformation

Jian Wang, Yi Wang

Martensitic Ni-Ti was observed to transform to the austenitic phase due to defects introduced either by ion or electron irradiations at a temperature where the martensitic phase is normally stable. The phenomenon was studied by molecular dynamics simulatio ...

2006

A new standstill position detection technique for non-salient PMSM's using the Magnetic Anisotropy Method (MAM)

Yves Perriard, Miroslav Markovic, Jan Persson

This paper describes a new method to estimate the standstill position of Permanent Magnet Synchronous Motors (PMSM). The method is based on the anisotropic properties of permanent magnets and is therefore referred to as Magnetic Anisotropy Method (MAM). Th ...

IEEE2005

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