磁电阻
消磁场
磁化
凝聚态物理
磁场
各向异性
材料科学
饱和(图论)
磁各向异性
旋转(数学)
Stoner–Wohlfarth模型
领域(数学)
GSM演进的增强数据速率
核磁共振
物理
光学
几何学
工程类
数学
量子力学
组合数学
纯数学
电信
作者
Yiya Huang,Xin Shan,Hongyan Ren,Ronggui Zhu,Guanlun Zhu,Jun Teng,Hui Zhang,Chun Feng,Guo Yu
标识
DOI:10.1088/1361-648x/ad0352
摘要
In this paper, an anisotropic magnetoresistive (AMR) thin film sensor which can be used for magnetic scale has been prepared, and its output voltage is about 4.7-4.9 mV V-1. On the basis of the Stoner-Wohlfarth model and with considering the non-uniformity of the demagnetizing field along the width direction of the strips, both the static and dynamic responses of the AMR sensors have been calculated. The results have shown that the calculated results are in agreement with the experimental data. The magnetization rotation in the magnetic sensor strongly depends on the nonuniform demagnetizing field along the width direction. The magnetization at the center is easily rotated into the field direction, and the magnetization at the edge is difficult to be rotated. The smaller the width of the magnetoresistive strip is, the larger both the demagnetizing field at the edge and the saturation field of the magnetic sensor are. The results are helpful for understanding the magnetization rotation of magnetic sensors and developing the magnetic sensors with high performance.
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