Work

Fitting of giant magnetoimpedance curves using the complex method in optimization techniques

Year: 2024

Type: article

Abstract: The giant magnetoimpedance (GMI) effect is characterized by substantial variations in both the real and imaginary components of the impedance when subjected to an alternating current in the presence of a static magnetic field. In quasistatic models, the GMI profile can be effectively delineated by the changes in transverse permeability in response to variations in the external magnetic field. Building on this, the magnetic anisotropy field and anisotropy angle for specific magnetic phases can be determined by fitting the experimental data points. The dual magnetic phase structure of the CoP/NiCoP/Cu composite wire results in a four-peak profile in its GMI curves, making it suitable as a target curve for fitting. By preprocessing the GMI curves and applying the Complex Method within optimization techniques through multiple iterations, the theoretical target curve is ultimately obtained, along with the extraction of the physical parameters embedded within it. This approach presents a novel solution to the multi-parameter curve fitting.

Source: Physica Scripta

DOI: 10.1088/1402-4896/ad735e

Authors: Xutao Sun, Guotu Shen, Zhenjie Zhao

Institution: East China Normal University

Language: English

Topic: Magnetic Field Sensors Techniques

Subfield: Electrical and Electronic Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: hybrid

Estimated APC paid: $2,285

Funders: National Natural Science Foundation of China, Science and Technology Commission of Shanghai Municipality