Differences in the Magneto-Impedance of FeNi/Cu/FeNi Multilayers With Open and Closed Magnetic Path

被引：20

作者：

Fernandez, E. ^{[1
]}

Garcia-Arribas, A. ^{[1
]}

Volchkov, S. O. ^{[2
]}

Kurlyandskaya, G. V. ^{[1
,2
]}

Barandiaran, J. M. ^{[1
]}

机构：

[1] Univ Basque Country, Dept Elect & Elect, E-48080 Bilbao, Spain

[2] Ural State Univ, Fac Phys, Ekaterinburg 620083, Russia

来源：

IEEE TRANSACTIONS ON MAGNETICS | 2010年 / 46卷 / 02期

关键词：

Magnetic domains; magnetization processes; magnetoimpedance (MI); thin films; MAGNETOIMPEDANCE; FILMS; WIRES;

D O I：

10.1109/TMAG.2009.2033020

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

The performance of the magnetoimpedance effect in terms of magnitude and sensibility is evaluated for two FeNi/Cu/FeNi multilayer structures with different geometries, such that in one of them the magnetic layers are in contact at the edges, presenting a closed magnetic path that is absent in the other. Magnetization measurements by Kerr effect and magnetic domain observations are used to characterize the samples. The results show that the sample with the closed magnetic path performs better, reaching a value of 38% of variation of the impedance and a sensibility of about 5%/Oe at 325 MHz. However, at lower frequencies the sample with open magnetic path presents higher values of the magnetoimpedance effect and its sensitivity than the one with the closed magnetic path. Finite element simulations confirm that this behavior is a direct consequence of the geometry of the samples.

引用

页码：658 / 661

页数：4

共 14 条

[11] Very large magnetoimpedance effect in FeCoNi ferromagnetic tubes with high order magnetic anisotropy [J].