Flexible magnetoimpedance sensor

被引：69

作者：

Li, Bodong ^{[1
]}

Kavaldzhiev, Mincho N. ^{[1
]}

Kosel, Juergen ^{[1
]}

机构：

[1] King Abdullah Univ Sci & Technol, Comp Elect & Math Sci & Engn Div, Thuwal 239556900, Saudi Arabia

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2015年 / 378卷

关键词：

Flexible electronics; Magnetoimpedance; Magnetostriction; Flexible sensor; GIANT MAGNETO-IMPEDANCE; FILMS; ANISOTROPY; BEHAVIOR; ALLOYS;

D O I：

10.1016/j.jmmm.2014.11.067

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Flexible magnetoimpedance (MI) sensors fabricated using a NiFe/Cu/NiFe tri-layer on Kapton substrate have been studied. A customized flexible microstrip transmission line was employed to investigate the MI sensors's magnetic field and frequency responses and their dependence on the sensors's deflection. For the first time, the impedance characteristic is obtained through reflection coefficient analysis over a wide range of frequencies from 0.1 MHz to 3 GHz and for deflections ranging from zero curvature to a radius of 17.2 cm. The sensor element maintains a high MI ratio of up to 90% and magnetic sensitivity of up to 9.2%/Oe over different bending curvatures. The relationship between the curvature and material composition is discussed based on the magnetostriction effect and stress simulations. The sensor's large frequency range, simple fabrication process and high sensitivity provide a great potential for flexible electronics and wireless applications. (C) 2014 Elsevier B.V. All rights reserved

引用

页码：499 / 505

页数：7

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