Valve behavior of the giant magneto-impedance in field-annealed Co70Fe5Si15Nb2.2Cu0.8B7 amorphous ribbon

MH Phan; H-X Peng; MR Wisnom; SC Yu; N Chau

doi:10.1063/1.1854891

Valve behavior of the giant magneto-impedance in field-annealed Co₇₀Fe₅Si₁₅Nb_2.2Cu_0.8B7 amorphous ribbon

MH Phan, H-X Peng, MR Wisnom, SC Yu, N Chau

Department of Aerospace Engineering

Research output: Contribution to journal › Article (Academic Journal) › peer-review

9 Citations (Scopus)

Abstract

The influence of longitudinal field annealing on the giant magnetoimpedance (GMI) effect in Co70Fe5Si15Nb2.2Cu0.8B7 amorphous ribbons has been investigated. It was found that annealing in the open air at magnetic fields smaller than the anisotropy field along the ribbon gave rise to the GMI-valve phenomenon, while annealing at magnetic fields higher than the anisotropy field significantly reduced the GMI effect. The GMI-valve behavior corresponding to the highest field sensitivity of GMI (125%/Oe) was observed at a frequency of 0.1 MHz in the ribbon annealed under an applied field of 2 Oe. This is ideal for developing sensitive and quick-response magnetic sensors. The GMI-valve behavior observed in the Co-based amorphous ribbon due to field annealing can be explained by considering the complex permeability spectra in relation to the rotational dc magnetization.

Translated title of the contribution	Valve behavior of the giant magneto-impedance in field-annealed Co₇₀Fe₅Si₁₅Nb_2.2Cu_0.8B7 amorphous ribbon
Original language	English
Pages (from-to)	10M108-1 - 10M108-3
Number of pages	3
Journal	Journal of Applied Physics
Volume	97
DOIs	https://doi.org/10.1063/1.1854891
Publication status	Published - May 2005

Bibliographical note

Publisher: American Institute of Physics

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@article{e953714f76b3435282683a89625e9e9a,

title = "Valve behavior of the giant magneto-impedance in field-annealed Co70Fe5Si15Nb2.2Cu0.8B7 amorphous ribbon",

abstract = "The influence of longitudinal field annealing on the giant magnetoimpedance (GMI) effect in Co70Fe5Si15Nb2.2Cu0.8B7 amorphous ribbons has been investigated. It was found that annealing in the open air at magnetic fields smaller than the anisotropy field along the ribbon gave rise to the GMI-valve phenomenon, while annealing at magnetic fields higher than the anisotropy field significantly reduced the GMI effect. The GMI-valve behavior corresponding to the highest field sensitivity of GMI (125%/Oe) was observed at a frequency of 0.1 MHz in the ribbon annealed under an applied field of 2 Oe. This is ideal for developing sensitive and quick-response magnetic sensors. The GMI-valve behavior observed in the Co-based amorphous ribbon due to field annealing can be explained by considering the complex permeability spectra in relation to the rotational dc magnetization.",

author = "MH Phan and H-X Peng and MR Wisnom and SC Yu and N Chau",

note = "Publisher: American Institute of Physics",

year = "2005",

month = may,

doi = "10.1063/1.1854891",

language = "English",

volume = "97",

pages = "10M108--1 -- 10M108--3",

journal = "Journal of Applied Physics",

issn = "1089-7550",

publisher = "American Institute of Physics (AIP)",

}

TY - JOUR

T1 - Valve behavior of the giant magneto-impedance in field-annealed Co70Fe5Si15Nb2.2Cu0.8B7 amorphous ribbon

AU - Phan, MH

AU - Peng, H-X

AU - Wisnom, MR

AU - Yu, SC

AU - Chau, N

N1 - Publisher: American Institute of Physics

PY - 2005/5

Y1 - 2005/5

N2 - The influence of longitudinal field annealing on the giant magnetoimpedance (GMI) effect in Co70Fe5Si15Nb2.2Cu0.8B7 amorphous ribbons has been investigated. It was found that annealing in the open air at magnetic fields smaller than the anisotropy field along the ribbon gave rise to the GMI-valve phenomenon, while annealing at magnetic fields higher than the anisotropy field significantly reduced the GMI effect. The GMI-valve behavior corresponding to the highest field sensitivity of GMI (125%/Oe) was observed at a frequency of 0.1 MHz in the ribbon annealed under an applied field of 2 Oe. This is ideal for developing sensitive and quick-response magnetic sensors. The GMI-valve behavior observed in the Co-based amorphous ribbon due to field annealing can be explained by considering the complex permeability spectra in relation to the rotational dc magnetization.

AB - The influence of longitudinal field annealing on the giant magnetoimpedance (GMI) effect in Co70Fe5Si15Nb2.2Cu0.8B7 amorphous ribbons has been investigated. It was found that annealing in the open air at magnetic fields smaller than the anisotropy field along the ribbon gave rise to the GMI-valve phenomenon, while annealing at magnetic fields higher than the anisotropy field significantly reduced the GMI effect. The GMI-valve behavior corresponding to the highest field sensitivity of GMI (125%/Oe) was observed at a frequency of 0.1 MHz in the ribbon annealed under an applied field of 2 Oe. This is ideal for developing sensitive and quick-response magnetic sensors. The GMI-valve behavior observed in the Co-based amorphous ribbon due to field annealing can be explained by considering the complex permeability spectra in relation to the rotational dc magnetization.

U2 - 10.1063/1.1854891

DO - 10.1063/1.1854891

M3 - Article (Academic Journal)

SN - 1089-7550

VL - 97

SP - 10M108-1 - 10M108-3

JO - Journal of Applied Physics

JF - Journal of Applied Physics

ER -