Measurement and analysis of an optimized Jiles–Atherton model considering the influence of temperature applied in magnetic shielding devices

Abstract

The magnetic shielding devices works at different temperatures due to the influence of gas chamber and environmental temperature in the application of ultra-highly sensitive spin exchange relaxation free (SERF) magnetometer. To accurately evaluate the residual magnetic field of magnetic shielding device at different temperatures, it is necessary to build the magnetization model considering temperature. However, the modelling of permalloy’s magnetization properties and the measurement of residual magnetic field in magnetic shielding devices at different temperatures haven’t been considered. In this paper, the optimized Jiles-Atherton model of permalloy considering temperature is constructed in which parameters are extracted by particle swarm optimization algorithm. To further verify the effectiveness of the model in the magnetic shielding device, it is applied to the residual magnetic field simulation of magnetic shielding devices and verified by measurement. The optimized Jiles-Atherton model considering temperature improves the calculation accuracy of magnetic shielding devices, which is of great significance for the application of ultra-highly sensitive SERF magnetometers.

Research on the stress magnetic coupling effect of a permalloy based on an optimized Jiles Atherton model in magnetic shielding devices

“…Typical magnetic shielding devices weaken the external magnetic field [11,12] through the magnetic flux shunt effect of permalloy (a kind of high magnetic conductivity material) [13,14]. The magnetic properties of permalloy will determine the shielding performance, such as the relative permeability and coercivity.…”

The SF and remanence evaluation of magnetic shields based on SST for low-frequency and degaussing situation

“…Yang et al has further tested the B-H relationship and studied the corresponding remanence of MSR under the degaussing waveform of various parameters [16]. In the previous research, the magnetic properties are generally tested using a toroidal sample instead of the square permalloy plate of the practical use [17][18][19]. The magnetic characteristics of Mumetal in various physical shapes and dimensions are affected by the different annealing temperatures during the heat treatment process [20][21][22].…”