Effect of Field Annealing Induced Magnetic Anisotropy on the Performance of Meander‐Core Orthogonal Fluxgate Sensor. Issue 21 (8th August 2018)

• Record Type: Journal Article
• Authors: Zhi, Shaotao; Lei, Chong; Yang, Zhen; Feng, Zhu; Guo, Lei; Zhou, Yong
• Is Part Of: Physica status solidi. Volume 215:Issue 21(2018)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2018-08-08
• Subjects: amorphous ribbon -- field annealing -- induced anisotropy -- meander‐core -- orthogonal fluxgate; Solid state physics -- Periodicals; Solids -- Industrial applications -- Periodicals; 530.41
• DOI: 10.1002/pssa.201800400
• Languages: English
• ISSNs: 1862-6300

Abstract

Abstract : The magnetic anisotropy field distribution is discussed for Co‐based amorphous ribbon annealed under different field conditions leading to different induced anisotropies: longitudinal field (LF) and transversal field (TF) annealing. In order to understand the relation between the field annealing‐induced anisotropy and the performance of meander‐core orthogonal fluxgate sensor, field‐annealed ribbons with different in‐plane anisotropies as cores of orthogonal fluxgate sensors are employed and both noise and sensitivity in fundamental mode are measured. Experimental results indicate that LF annealing‐induced anisotropy with easy axis perpendicular to the direction of excitation field can effectively improve the sensor sensitivity. On the other hand, TF annealing‐induced anisotropy with easy axis parallel to excitation field results in lower sensitivity, but the noise is also lower. The results obtained are useful for developing the high‐performance orthogonal fluxgate sensors based on amorphous ribbon cores. Abstract : This paper studies the magnetic anisotropy field distribution for Co‐based amorphous ribbon annealed under longitudinal field (LF) and transverse field (TF). Furthermore, the influences of field annealing‐induced magnetic anisotropy on the performance of meander‐core orthogonal fluxgate sensors are investigated. It is an interesting work which is important in the performance improvement of magnetic sensors based on amorphous materials.