Effect of annealing field on asymmetric giant magnetoimpedance profile in co-based amorphous ribbon

Kil Jae Jang; Cheol Gi Kim; Seok Soo Yoon; Seong Cho Yu

doi:10.1016/S0304-8853(00)00200-6

Effect of annealing field on asymmetric giant magnetoimpedance profile in co-based amorphous ribbon

Kil Jae Jang, Cheol Gi Kim, Seok Soo Yoon, Seong Cho Yu

Department of Physics and Chemistry

Research output: Contribution to journal › Conference article › peer-review

26 Scopus citations

Abstract

We prepared weak-field annealed amorphous samples in the open air and present the change of giant-magnetoimpedance (GMI) profiles as functions of annealing field, H_a. The profile for 0.1 MHz measuring frequency shows two typical peaks in the sample annealed in a field of H_a < 50 mOe. Increasing H_a to 500 mOe, the GMI peak in the region where the applied field is antiparallel to the annealing field decreases with H_a, showing an asymmetric GMI profile. As the annealing field increases over 500 mOe, GMI in the antiparallel field region disappears and a GMI-valve in the parallel field region is revealed due to the exchange coupling of domains in the amorphous core with the unidirectional anisotropy field in a crystalline layer. However, in the sample with H_a of 15 Oe, the GMI peak in the antiparallel region is observable again.

Original language	English
Pages (from-to)	488-491
Number of pages	4
Journal	Journal of Magnetism and Magnetic Materials
Volume	215
DOIs	https://doi.org/10.1016/S0304-8853(00)00200-6
State	Published - 2 Jun 2000
Event	14th International Symposium on Soft Magnetic Materials (SMM14) - Balatonfured, Hung Duration: 8 Sep 1999 → 10 Sep 1999

Bibliographical note

Funding Information:
This work was supported by the Korea Research Foundation under Grant No. 1999-015-DP0139.

Access to Document

10.1016/S0304-8853(00)00200-6

Cite this

@article{32950815b70c44d8a057d3c5ce0bc78a,

title = "Effect of annealing field on asymmetric giant magnetoimpedance profile in co-based amorphous ribbon",

abstract = "We prepared weak-field annealed amorphous samples in the open air and present the change of giant-magnetoimpedance (GMI) profiles as functions of annealing field, Ha. The profile for 0.1 MHz measuring frequency shows two typical peaks in the sample annealed in a field of Ha < 50 mOe. Increasing Ha to 500 mOe, the GMI peak in the region where the applied field is antiparallel to the annealing field decreases with Ha, showing an asymmetric GMI profile. As the annealing field increases over 500 mOe, GMI in the antiparallel field region disappears and a GMI-valve in the parallel field region is revealed due to the exchange coupling of domains in the amorphous core with the unidirectional anisotropy field in a crystalline layer. However, in the sample with Ha of 15 Oe, the GMI peak in the antiparallel region is observable again.",

author = "Jang, {Kil Jae} and Kim, {Cheol Gi} and Yoon, {Seok Soo} and Yu, {Seong Cho}",

note = "Funding Information: This work was supported by the Korea Research Foundation under Grant No. 1999-015-DP0139.; 14th International Symposium on Soft Magnetic Materials (SMM14) ; Conference date: 08-09-1999 Through 10-09-1999",

year = "2000",

month = jun,

day = "2",

doi = "10.1016/S0304-8853(00)00200-6",

language = "English",

volume = "215",

pages = "488--491",

journal = "Journal of Magnetism and Magnetic Materials",

issn = "0304-8853",

publisher = "Elsevier",

}

TY - JOUR

T1 - Effect of annealing field on asymmetric giant magnetoimpedance profile in co-based amorphous ribbon

AU - Jang, Kil Jae

AU - Kim, Cheol Gi

AU - Yoon, Seok Soo

AU - Yu, Seong Cho

N1 - Funding Information: This work was supported by the Korea Research Foundation under Grant No. 1999-015-DP0139.

PY - 2000/6/2

Y1 - 2000/6/2

N2 - We prepared weak-field annealed amorphous samples in the open air and present the change of giant-magnetoimpedance (GMI) profiles as functions of annealing field, Ha. The profile for 0.1 MHz measuring frequency shows two typical peaks in the sample annealed in a field of Ha < 50 mOe. Increasing Ha to 500 mOe, the GMI peak in the region where the applied field is antiparallel to the annealing field decreases with Ha, showing an asymmetric GMI profile. As the annealing field increases over 500 mOe, GMI in the antiparallel field region disappears and a GMI-valve in the parallel field region is revealed due to the exchange coupling of domains in the amorphous core with the unidirectional anisotropy field in a crystalline layer. However, in the sample with Ha of 15 Oe, the GMI peak in the antiparallel region is observable again.

AB - We prepared weak-field annealed amorphous samples in the open air and present the change of giant-magnetoimpedance (GMI) profiles as functions of annealing field, Ha. The profile for 0.1 MHz measuring frequency shows two typical peaks in the sample annealed in a field of Ha < 50 mOe. Increasing Ha to 500 mOe, the GMI peak in the region where the applied field is antiparallel to the annealing field decreases with Ha, showing an asymmetric GMI profile. As the annealing field increases over 500 mOe, GMI in the antiparallel field region disappears and a GMI-valve in the parallel field region is revealed due to the exchange coupling of domains in the amorphous core with the unidirectional anisotropy field in a crystalline layer. However, in the sample with Ha of 15 Oe, the GMI peak in the antiparallel region is observable again.

UR - http://www.scopus.com/inward/record.url?scp=0033692250&partnerID=8YFLogxK

U2 - 10.1016/S0304-8853(00)00200-6

DO - 10.1016/S0304-8853(00)00200-6

M3 - Conference article

AN - SCOPUS:0033692250

SN - 0304-8853

VL - 215

SP - 488

EP - 491

JO - Journal of Magnetism and Magnetic Materials

JF - Journal of Magnetism and Magnetic Materials

T2 - 14th International Symposium on Soft Magnetic Materials (SMM14)

Y2 - 8 September 1999 through 10 September 1999

ER -

Effect of annealing field on asymmetric giant magnetoimpedance profile in co-based amorphous ribbon

Abstract

Bibliographical note

Access to Document

Other files and links

Fingerprint

Cite this