Angular dependence of asymmetric magnetoimpedance in exchange biased NiFe/IrMn multilayers

被引：42

作者：

da Silva, R. B. ^{[1
]}

Correa, M. A. ^{[2
]}

Silva, E. F. ^{[2
]}

Mori, T. J. A. ^{[1
]}

Della Pace, R. D. ^{[1
]}

Dutra, R. ^{[3
]}

Viegas, A. D. C. ^{[4
]}

Bohn, F. ^{[5
]}

Sommer, R. L. ^{[3
]}

机构：

[1] Univ Fed Santa Maria, Dept Fis, BR-97105900 Santa Maria, RS, Brazil

[2] Univ Fed Rio Grande do Norte, Dept Fis, BR-59078900 Natal, RN, Brazil

[3] Ctr Brasileiro Pesquisas Fis, BR-22290180 Rio De Janeiro, RJ, Brazil

[4] Univ Fed Santa Catarina, Dept Fis, BR-88010970 Florianopolis, SC, Brazil

[5] Univ Fed Rio Grande do Norte, Escola Ciencias & Tecnol, BR-59078900 Natal, RN, Brazil

来源：

APPLIED PHYSICS LETTERS | 2014年 / 104卷 / 10期

关键词：

GIANT MAGNETO-IMPEDANCE; AMORPHOUS RIBBONS; ANISOTROPY; WIRES; BILAYERS;

D O I：

10.1063/1.4867973

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We investigate the angular dependence of asymmetric magnetoimpedance of NiFe/IrMn multilayers and explore the possibility of tuning the linear region of the magnetoimpedance curves by modifying the angle between the applied external magnetic field and exchange bias field, and probe current frequency. We quantify the sensitivity by calculating the ratio vertical bar Delta Z vertical bar/vertical bar Delta H vertical bar at low magnetic fields as a function of the frequency for samples cut with different orientations and show that considerable values in the linear region around zero field can be reached. The results extend the possibilities for application of exchange biased magnetoimpedance multilayers as probe element for the development and improvement of auto-biased linear magnetic field sensors. (C) 2014 AIP Publishing LLC.

引用

页数：5

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