Coil-less fluxgate effect in CoNiFe/Cu wire electrodeposited under torsion


ATALAY S. , YAGMUR V., ATALAY F. , BAYRİ N.

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, vol.323, no.22, pp.2818-2822, 2011 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 323 Issue: 22
  • Publication Date: 2011
  • Doi Number: 10.1016/j.jmmm.2011.06.023
  • Title of Journal : JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
  • Page Numbers: pp.2818-2822

Abstract

Co19Ni49.6Fe31.4 layer was electrodeposited onto a twisted Cu wire and helical anisotropy was induced in the magnetic Co19Ni49.6Fe31.4 shell. The magnetic and coil-less fluxgate (CF) properties are presented. The Co19Ni49.6Fe31.4/Cu wire, produced at zero torsional strain, shows a CF output of nearly zero. The samples produced under torsional strains of 29.5 pi and 59 pi rad/m show a linear change in CF output in the low-frequency range. At higher frequencies the CF output shows two linear ranges. A maximum sensitivity of 150V/T is observed at 20 kHz driving-current frequency and 67 mA driving current for a wire produced under 59 pi rad/m torsional strain. It is also found that the slope of the CF curve depends on the direction of induced anisotropy. (C) 2011 Elsevier B.V. All rights reserved.