In situ microwave characterization of microwire composites with external magnetic field

F. X. Qin, C. Brosseau*, H. X. Peng, H. Wang, J. Sun

*Corresponding author for this work

Research output: Contribution to journalArticle (Academic Journal)

18 Citations (Scopus)

Abstract

Rubber composites containing Co68.15Fe4.35Si12.25B15.25 glass-covered amorphous microwires were fabricated. For samples containing 5mm long wires and randomly dispersed in the polymer matrix, our results demonstrate that the current induces resonance of circumferential permeability (magnetoimpedance resonance) resulting in a significant change of the effective permittivity of the wire-filled composites with application of a high magnetic field. For samples containing longer wires (70 mm) periodically arranged in the polymer matrix, the permittivity spectrum shows two resonance peaks due to, respectively, dipole and magnetoimpedance resonance. The induced magnetoimpedance resonance has a narrower linewidth than the dipole one as magnetic field is increased. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4712126]

Translated title of the contributionIn situ microwave characterization of microwire composites with external magnetic field
Original languageEnglish
Pages (from-to)192903-1 - 192903-4
Number of pages4
JournalApplied Physics Letters
Volume100
Issue number19
DOIs
Publication statusPublished - 7 May 2012

Keywords

  • GIANT MAGNETOIMPEDANCE
  • WIRES

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