Study on the magnetic shielding properties of nanocrystalline strips under bending stress

• DOI: 10.1088/1402-4896/ad302f
• Publication Date: 2024-03-04T22:44:15Z
• Authors: Lanjie Yuan; Xueping Xu; Pengfei Wang; Yuejing Huang; Peiling Cui
• Keywords: STRIPS; Nanocrystalline material

Abstract The study of the magnetic properties nanocrystalline materials under stress is great significance for construction small and lightweight shielding rooms. Therefore, this paper investigates effect on action external bending stress. By comparing test results soft measuring device with without stress, it found that permeability ( μ i ) decreases by about 51.41% when introduced σ increased 5.96 <?CDATA $\times $?> <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> <mml:mo>×</mml:mo> </mml:math> 10 7 pa, whereas ${K}_{\text{u}}^{\text{Fe}-\text{Si}}$?> <mml:msubsup> <mml:mrow> <mml:mi>K</mml:mi> </mml:mrow> <mml:mtext>u</mml:mtext> <mml:mtext>Fe</mml:mtext> <mml:mo>−</mml:mo> <mml:mtext>Si</mml:mtext> </mml:msubsup> (induced anisotropy constant) ${H}_{\text{k}}$?> <mml:msub> <mml:mi>H</mml:mi> <mml:mtext>k</mml:mtext> </mml:msub> (field anisotropy) increase 5.30 2 J m –3 1.08 A −1 , respectively. Jiles-Atherton (J-A) model considering radius change correlation established, typical parameters J-A are fitted using Gazelle Optimization Algorithm (GOA), RMSE (root mean square error) all them less than 0.056 T. domain density which verified between Our reveal macroscopic micromechanical can be effectively combined model, will provide a theoretical basis simulation in actual situation.