Ultrasoft FeAlSiBCuNb nanocomposites for GMI sensor applications

MH Phan, HX Peng*, MR Wisnom, SC Yu

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference Contribution (Conference Proceeding)

3 Citations (Scopus)

Abstract

Fe73-xAlxSi14B8.5Cu1Nb3.5 (x = 0, 2) nanocomposite materials consisting of a nanocrystalline phase in an amorphous matrix were obtained by annealing their precursor amorphous ribbons, which were prepared by the melt-spinning technique, at different temperatures ranging between 350 degrees C and 650 degrees C for 45 min in vacuum. Investigation on their magnetic and magnetoimpedance properties indicates that the Al-containing sample (x = 2) possesses superior magnetic softness and giant magnetoimpedance (GMI) effect over the Al-free counterpart. This can be likely ascribed to the increased magnetic permeability, decreased coercive force and decreased resistivity. The increased magnetic permeability is resulted from a reduction in magnetocrystalline anisotropy and saturation magnetostriction. The correlations between magnetic softness, electrical properties and GMI behaviour is discussed in the light of the skin effect model. These results indicate that the Al-containing Fe-based nanocomposite material can be used for GMI sensor applications.

Original languageEnglish
Title of host publicationSmart Structures and Materials 2005: Smart Electronics, Mems, BioMems, and Nanotechnology
EditorsVK Varadan
Place of PublicationBELLINGHAM
PublisherSociety of Photo-Optical Instrumentation Engineers (SPIE)
Pages255-266
Number of pages12
ISBN (Print)0-8194-5744-2
DOIs
Publication statusPublished - 2005
EventSmart Structures and Materials 2005 Conference - San Diego, Canada
Duration: 7 Mar 200510 Mar 2005

Publication series

NamePROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE)
PublisherSPIE-INT SOC OPTICAL ENGINEERING
Volume5763
ISSN (Print)0277-786X

Conference

ConferenceSmart Structures and Materials 2005 Conference
CountryCanada
CitySan Diego
Period7/03/0510/03/05

Keywords

  • GIANT MAGNETOIMPEDANCE
  • Fe-based nanocomposite alloys
  • WIRES
  • CU
  • magnetoimpedance
  • SOFT-MAGNETIC-PROPERTIES
  • ALLOY
  • magnetic sensors
  • AMORPHOUS MATERIALS
  • DEPENDENCE
  • NANOCRYSTALLINE RIBBONS
  • FE73.5CU1NB3SI13.5B9 RIBBONS
  • IMPEDANCE

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