682 articles – 1963 Notices  [english version]
Fiche concise Conférences invitées
Multiplication of domain-walls in magnetically soft nanocristalline alloys
Geoffroy O.
Dans Soft Magnetic Materials 20 - Soft Magnetic Materials 20, Kos : Grèce (2011) - http://hal.archives-ouvertes.fr/hal-00628393
Olivier Geoffroy1
1 :  G2Elab - Laboratoire de Génie Electrique de Grenoble
CNRS : UMR5269 – Institut National Polytechnique de Grenoble (INPG) – Université Joseph Fourier - Grenoble I
961 rue de la Houille Blanche BP 46. 38402 ST MARTIN D'HERES CEDEX
France
Sciences de l'ingénieur/Energie électrique
Multiplication of domain-walls in magnetically soft nanocristalline alloys
We study the multiplication of domain walls under dynamical cyclic magnetization in soft nanocristalline samples. At first, some basic theoretical points are presented and analytical formula derived dealing with the critical field Hcr. In a second part, we describe different experimental protocols used to study this phenomenon. In the last part, we show how to use the experimental determination of Hcr to look for the effective anisotropy. A set of 14 samples featturing various annealing treatments and thus a large panel of anisotropies is used to compare this method to the classical one based on coercitivity measurement.
Anglais

Soft Magnetic Materials 20
internationale
18/09/2011
.

Soft Magnetic Materials 20
18/09/2011
Kos
Grèce