Effect of annealing temperature on permeability and giant magneto-impedance of Fe-based amorphous ribbon

MH Phan*, HX Peng, MR Wisnom, SC Yu, CG Kim, NH Nghi

*Corresponding author for this work

Research output: Contribution to journalArticle (Academic Journal)peer-review

29 Citations (Scopus)

Abstract

The effect of annealing treatment on permeability and magneto-impedance in Fe73Cu1Nb3.5Si14B9.5 amorphous ribbons was investigated systematically. The magneto-impedance profiles were measured as a function of the external magnetic field at various frequencies up to 10 MHz. The real and imaginary parts of the complex permeability were measured in a frequency range of 0.1-10 MHz under different applied ac field. The results indicated that the longitudinal permeability resulting from domain wall motion decreased drastically after annealing treatment, but the permeability resulting from the rotational magnetization increased with increasing annealing temperature up to 540 degrees C and then decreased at higher temperatures. The largest magneto-impedance effect was observed in the nanocrystalline alloy. The correlation between the soft magnetic properties and the magnitude and sensitivity of the GMI effect was discussed. (c) 2006 Published by Elsevier B.V.

Translated title of the contributionEffect of annealing temperature on permeability and giant magneto-impedance of Fe-based amorphous ribbon
Original languageEnglish
Pages (from-to)62-65
Number of pages4
JournalSensors and Actuators A: Physical
Volume129
Issue number1-2
DOIs
Publication statusPublished - 24 May 2006
Event5th European Magnetic Sensors and Actuators Conference - Cardiff
Duration: 4 Jul 20046 Jul 2004

Bibliographical note

Publisher: Elsevier

Keywords

  • RELAXATION
  • permeability spectra
  • magneto-impedance
  • Fe-based amorphous alloys
  • MAGNETOIMPEDANCE
  • annealing

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