Novel Magnetic Field Modulation Concept Using Multiferroic Heterostructure for Magnetoresistive Sensors

被引：11

作者：

Pan, Long ^{[1
]}

Pan, Mengchun ^{[1
]}

Hu, Jiafei ^{[1
]}

Hu, Yueguo ^{[1
]}

Che, Yulu ^{[1
]}

Yu, Yang ^{[1
]}

Wang, Nan ^{[2
]}

Qiu, Weicheng ^{[1
]}

Li, Peisen ^{[1
]}

Peng, Junping ^{[1
]}

Jiang, Jianzhong ^{[2
]}

机构：

[1] Natl Univ Def Technol, Coll Intelligence Sci & Technol, Changsha 410073, Hunan, Peoples R China

[2] Zhejiang Univ, Sch Mat Sci & Engn, Hangzhou 310027, Zhejiang, Peoples R China

来源：

SENSORS | 2020年 / 20卷 / 05期

基金：

中国博士后科学基金; 中国国家自然科学基金;

关键词：

MR magnetic sensors; suppress; 1; f noise; ferroelectric; ferromagnetic multiferroic heterostructure; equivalent magnetic circuit model; 1/F NOISE; FERROMAGNETIC-RESONANCE; FREQUENCY; MODEL;

D O I：

10.3390/s20051440

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

The low frequency magnetic field detection ability of magnetoresistive (MR)sensor is seriously affected by 1/f noise. At present, the method to suppress the influence of low frequency noise is mainly to modulate the measured magnetic field by mechanical resonance. In this paper, a novel modulation concept employing a magnetoelectric coupling effect is proposed. A design method of modulation structure based on an equivalent magnetic circuit model (EMCM) and a single domain model of in-plane moment was established. An EMCM was established to examine the relationship between the permeability of flux modulation film (FMF) and modulation efficiency, which was further verified through a finite element simulation model (FESM). Then, the permeability modulated by the voltage of a ferroelectric/ferromagnetic (FE/FM) multiferroic heterostructure was theoretically studied. Combining these studies, the modulation structure and the material were further optimized, and a FeSiBPC/PMN-PT sample was prepared. Experimental results show that the actual magnetic susceptibility modulation ability of FeSiBPC/PMN-PT reached 150 times, and is in good agreement with the theoretical prediction. A theoretical modulation efficiency higher than 73% driven by a voltage of 10 V in FeSiBPC/PMN-PT can be obtained. These studies show a new concept for magnetoelectric coupling application, and establish a new method for magnetic field modulation with a multiferroic heterostructure.

引用

页数：13

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