Paper Title:
Influence of Pulsed Current Annealing on Giant Magneto-Impedance Effects of Co Based Amorphous Ribbon
  Abstract

In this paper, the influence of pulsed current annealing on giant magneto-impedance (GMI) effect of Co66.3Fe3.7Si12B18 amorphous ribbon under different driving current is studied. The experiment results show that the GMI effect is closely related to the annealing current density. With the increase of annealing current density, the GMI ratio ΔZ/Z rises firstly and the maximal GMI ratio of 53.8% is obtained for the sample annealed at 104A/mm2. When annealing current density increases further, the GMI ratio begins to decrease. The mechanism of the pulsed current annealing affecting the GMI effect is explained qualitatively. This paper also discusses the influence of transverse anisotropy field HK induced by annealing on GMI effect. Proper transverse anisotropy field benefits the enhancement of the maximal GMI ratio, however, the GMI ratio will begin to fall as soon as exceeding the critical value.

  Info
Periodical
Advanced Materials Research (Volumes 311-313)
Chapter
New Functional Materials
Edited by
Zhongning Guo
Pages
2035-2039
DOI
10.4028/www.scientific.net/AMR.311-313.2035
Citation
F. Jiang, B. H. Bao, "Influence of Pulsed Current Annealing on Giant Magneto-Impedance Effects of Co Based Amorphous Ribbon", Advanced Materials Research, Vols. 311-313, pp. 2035-2039, 2011
Online since
August 2011
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Price
$32.00
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