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Transducers'09, États-Unis (2009)

LONGITUDINAL AND TRANSVERSE COILED GIANT MAGNETOIMPEDANCE TRANSDUCERS PRINCIPLE, MODELING AND PERFORMANCES

Joel Moutoussamy 1, Christophe Coillot 1, Gérard Chanteur 1, Francisco Alves 2

(22/06/2009)

New Giant Magneto-Impedance structures are studied both experimentally and theoretically. These transducers are made with one or two anisotropic nanocrystalline ribbons and the magnetic excitation is provided by coils mounted either in transverse or longitudinal direction. Very high sensitivities up to 1000V/T have been achieved even at low excitation frequencies from 5kHz to 500kHz and low consumption driving current (5-10mA). The Eddy current phenomenon and magnetic domain considerations are used to determine a semi-theoretical model of impedance. Intrinsic sensitivity computation approach emphasizes on the role of the differential magnetic permeability in coiled GMI detection performances.

1 :	Laboratoire de Physique des Plasmas (LPP)
	Polytechnique - X – Université Pierre et Marie Curie [UPMC] - Paris VI – CNRS : UMR7648 – Université Paris XI - Paris Sud
2 :	Laboratoire de génie électrique de Paris (LGEP)
	CNRS : UMR8507 – Université Paris XI - Paris Sud – Université Pierre et Marie Curie [UPMC] - Paris VI – SUPELEC

Domaine

:

Sciences de l'ingénieur/Electronique

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Contributeur : Christophe Coillot <>

Soumis le : Vendredi 4 Mai 2012, 15:45:08

Dernière modification le : Lundi 7 Mai 2012, 08:39:56