文献类型：期刊文献

英文题名：Investigation the influence of structure parameters on giant-magnetoimpedance effect measured by non-contact method

作者：Feng, Zhu[1];Zhi, Shaotao[2];Sun, Xuecheng[2];Yan, Lili[2];Liu, Cui[3];Lei, Chong[2]

机构：[1]Shanghai Jiao Tong Univ, Sch Elect Informat & Elect Engn, Key Lab Thin Film & Microfabricat, Dept Micronano Elect,Minist Educ, Shanghai, Peoples R China;[2]Minist Educ, Key Lab Thin Film & Microfabricat, Sch Elect Informat & Elect Engn, Dept Micronano Elect, Shanghai, Peoples R China;[3]East China Univ Sci & Technol, Sch Mat Sci & Engn, Shanghai, Peoples R China

年份：2020

卷号：40

期号：6

起止页码：647

外文期刊名：SENSOR REVIEW

收录：;EI(收录号：20204209339641);WOS:【SCI-EXPANDED(收录号:WOS:000581965800001)】；

基金：This work is supported by The National Natural Science Foundation of China (No. 61273065), National Science and Technology Support Program (2012BAK08B05), Support Fund of Shanghai Jiao Tong University (AgriX2015005), Support Fund of Joint Research Center for Advanced Aerospace Technology of Shanghai Academy of Spaceflight Technology-Shanghai Jiao Tong University (USCAST2015-2), Support Fund of Aerospace Technology (15GFZ-JJ02-05), the Analytical and Testing Center in Shanghai Jiao Tong University and the Center for Advanced Electronic Materials and Devices in Shanghai Jiao Tong University.

语种：英文

外文关键词：Giant-magnetoimpedance; Non-contact method; Magnetic sensor; Laser cutting; Structure parameter

摘要：Purpose This paper aims to investigate the influence of structure parameters on giant-magnetoimpedance (GMI) effect measured by non-contact method. Design/methodology/approach The GMI sensor contains a Co-based internal magnetic core fabricated by laser cutting and an external solenoid. The influences of magnetic permeability of magnetic core and structure parameters on GMI effect were calculated in theoretical model. The output impedance, resistance, reactance and GMI ratio were measured by non-contact method using impedance analyzer. Findings Enhancing external magnetic field intensity can decrease the magnetic permeability of core, which has vital influences on the magnetic property and the output response of GMI sensor. In addition, increasing the width of magnetic core and the number of solenoid turns can increase the maximum GMI ratio. The maximum GMI ratio is 3,230% with core width of 6 mm and solenoid turns of 200. Originality/value Comparing with traditional contact-measured GMI sensor, the maximum GMI ratio and the magnetic field sensitivity are improved and the power consumption is decreased in non-contact measured GMI sensor. GMI sensor measured by non-contact method has a wide range of potential applications in ultra-sensitive magnetic field detection.