Tailoring of soft magnetic properties and giant magnetoimpedance effect in Co-Fe glass-coated microwires by Joule heating

被引：0
作者：
Gonzalez, A. [1 ,2 ]
Zhukova, V. [1 ,2 ,3 ]
Corte-Leon, P. [1 ,2 ,3 ,4 ]
Blanco, J. M. [2 ,3 ]
Zhukov, A. [1 ,2 ,3 ,5 ]
机构：
[1] Univ Basque Country, Dept Polymers & Adv Mat, San Sebastian 20018, Spain
[2] Univ Basque Country, Dept Appl Phys I, EIG, San Sebastian 20018, Spain
[3] Univ Basque Country, EHU Quantum Ctr, San Sebastian 20018, Spain
[4] Univ Cambridge, Dept Mat Sci & Met, 27 Charles Babbage Rd, Cambridge CB3 0FS, England
[5] Basque Fdn Sci, IKERBASQUE, Bilbao 48011, Spain
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 2025年 / 1020卷
关键词：
Glass-coated microwires; Magnetic alloys; Amorphous alloys; Giant; Magnetoimpedance; Magnetic characterization; Magnetic sensors; LARGE BARKHAUSEN; RICH MICROWIRES; AMORPHOUS WIRES; IMPEDANCE; OPTIMIZATION; ANISOTROPY; STRESSES; FECOSIB;
D O I：
10.1016/j.jallcom.2025.179450
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
We studied the effect of Joule heating on the magnetic properties and Giant Magnetoimpedance (GMI) effect of amorphous CoFe Co72Fe4B13Si11 microwires with metallic nucleus diameter around d = 25 mu m and total diameter D = 29 mu m. After Joule heating a decrease in coercivity and substantial increase in GMI ratio up to 650 % was observed. The frequency dependence of the maximum GMI ratio is evaluated: as frequency grows, we observed the onset of an additional peak on magnetic field dependencies of the GMI ratio and evaluated the frequency dependencies of said peaks for as-prepared and Joule heated samples. We discuss the observed experimental behaviors, considering the modification of the magnetic anisotropy and its spatial distribution in all samples.
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页数：9
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