Effect of the magnetic properties of the inclusions on the high-frequency dielectric response of diluted composites - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Physical Review B: Condensed Matter and Materials Physics (1998-2015) Année : 2002

Effect of the magnetic properties of the inclusions on the high-frequency dielectric response of diluted composites

Anne-Lise Adenot
  • Fonction : Auteur
Sylvie Deprot
  • Fonction : Auteur
Olivier Acher
  • Fonction : Auteur
Mohamed Latrach

Résumé

The high-frequency permittivity of composites consisting of a lattice of ferromagnetic wires is investigated. Experimental results using free space or coaxial line microwave measurements are reported. It is shown that the dielectric response is strongly dependent on the magnetic properties of the wires. Negative real permittivity is observed over a wide frequency range for wires with circumferential magnetization, while a resonant behavior is observed on wires with an axially magnetized core. In addition, it is shown that a moderate external field can induce large changes in the dielectric response. We prove that the underlying physics of these composites made of oriented magnetic wires is basically the same as the giant magnetoimpedance (GMI) effect. A model based on GMI equations is proposed which predicts this unusual dielectric phenomenon.
Fichier principal
Vignette du fichier
physrevb2002.pdf (205.61 Ko) Télécharger le fichier
Origine : Fichiers éditeurs autorisés sur une archive ouverte
Loading...

Dates et versions

hal-00911242 , version 1 (29-11-2013)

Identifiants

  • HAL Id : hal-00911242 , version 1

Citer

Olivier Reynet, Anne-Lise Adenot, Sylvie Deprot, Olivier Acher, Mohamed Latrach. Effect of the magnetic properties of the inclusions on the high-frequency dielectric response of diluted composites. Physical Review B: Condensed Matter and Materials Physics (1998-2015), 2002, 66 (9), pp.094412. ⟨hal-00911242⟩
276 Consultations
429 Téléchargements

Partager

Gmail Facebook X LinkedIn More