Sensitivity enhancement of longitudinally driven giant magnetoimpedance magnetic sensor using magnetoelastic resonance

  • Z. M. Wu
  • , K. Huang
  • , S. P. Li
  • , J. Y. Kang
  • , Z. J. Zhao
  • , X. L. Yang

Research output: Contribution to journalArticlepeer-review

4 Scopus citations

Abstract

The enhancement of longitudinally driven giant magnetoimpedance (LDGMI) effect in FeCuNbSiB ribbons was investigated utilizing magnetoelastic resonance. A maximum LDGMI ratio of the order of 10,000% was obtained for the ribbon annealed at 480 °C under optimum driving current frequency and driving current intensity. The dependences of enhancement magnitude on magnetoelastic coupling coefficient k33 and quality factor Q were analyzed in detail. It was found that high k33 and Q were favorable to enhance giant magnetoimpedance effect. The complex permeability of ribbon core was calculated, and the relationship between them and LDGMI enhancement behavior was also discussed. Additionally, a simple magnetic sensor based on this effect was developed. Its output sensitivity and stability were studied as well.

Original languageEnglish
Pages (from-to)62-65
Number of pages4
JournalSensors and Actuators A: Physical
Volume161
Issue number1-2
DOIs
StatePublished - Jun 2010

Keywords

  • High sensitivity
  • Longitudinally driven giant magnetoimpedance
  • Magnetic sensors
  • Magnetoelastic resonance

Fingerprint

Dive into the research topics of 'Sensitivity enhancement of longitudinally driven giant magnetoimpedance magnetic sensor using magnetoelastic resonance'. Together they form a unique fingerprint.

Cite this