MAGNETIC STRUCTURE OF RAPIDLY QUENCHED FeCo-BASED RIBBON ANNEALED UNDER TENSILE STRESS IN FLOWING ATMOSPHERE
FANG Yunzhang1, 2), XU Qiming1), YE Huiqun2), FAN Xiaozhen2), QIU Jianfeng2)
1) School of Materials Science and Engineering, Xi'an University of Architecture and Technology, Xi'an 710055
2) College of Mathematics, Physics and Information Engineering, Zhejiang Normal University, Jinhua 321004
Cite this article:
FANG Yunzhang XU Qiming YE Huiqun FAN Xiaozhen QIU Jianfeng. MAGNETIC STRUCTURE OF RAPIDLY QUENCHED FeCo-BASED RIBBON ANNEALED UNDER TENSILE STRESS IN FLOWING ATMOSPHERE. Acta Metall Sin, 2011, 47(4): 475-481.
Abstract The FeCo-based ribbons (Fe36Co36Nb4Si4.8B19.2) with dirrerent magnetic structures were prepared by single roller quenched method and then annealed with direct current under tensile stress in flowing atmosphere. The longitudinally driven giant magneto-impedance (LDGMI) effect in the stress-Joule-heated FeCo-based ribbon was measured with HP4294A impedance analyzer. The dependences between the characteristic parameters of the LDGMI profiles, ratio of giant magneto-impedance and half-height width of the applied magnetic field at the bottom, and driving current frequency were analyzed. The difference of the LDGMI profiles of the annealed FeCo-based ribbons with various remained thicknesses obtained by etching with 16.7% HCl solution was compared. The mechanism and the character of the stress-induced magnetic structure in FeCo-based ribbons were exposured by means of the principle of the skin effect and the theory of the dependence of giant magneto-impedance on the magnetic anisotropy in the magnetic materials.
Supported by National Natural Science Foundation of China (Nos.50871104 and 11079029), Natural Science Foundation of Zhejiang Province (No.Y4080324) and Natural Science Foundation of Shaanxi Province (No.Sj08e101)
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