Optimization of Magnetoimpedance Effect and Magnetic Properties of Fe-Rich Glass-Coated Microwires by Annealing

被引：0
|
作者：
Gonzalez, Alvaro [1 ,2 ,3 ]
Garcia-Gomez, Alfonso [1 ,2 ,3 ]
Zhukova, Valentina [1 ,2 ,3 ]
Corte-Leon, Paula [1 ,2 ,3 ]
Ipatov, Mihail [1 ,2 ]
Blanco, Juan Maria [2 ,3 ]
Gonzalez, Julian [1 ,3 ]
Zhukov, Arcady [1 ,2 ,3 ,4 ]
机构：
[1] Univ Basque Country UPV EHU, Fac Chem, Dept Polymers & Adv Mat Phys Chem & Technol, San Sebastian 20018, Spain
[2] Univ Basque Country UPV EHU, Escuela Ingn Gipuzkoa, Dept Fis Aplicada, San Sebastian 20018, Spain
[3] Univ Basque Country UPV EHU, EHU Quantum Ctr, San Sebastian 20018, Spain
[4] IKERBASQUE, Basque Fdn Sci, Bilbao 48011, Spain
来源：
SENSORS | 2023年 / 23卷 / 17期
关键词：
magnetic microwires; annealing; hysteresis loop; giant magnetoimpedance; domain wall propagation; magnetic anisotropy; MECHANICAL-PROPERTIES; AMORPHOUS WIRES; IMPEDANCE; FIELD; ANISOTROPY; FECOSIB;
D O I：
10.3390/s23177481
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
As-prepared Fe-rich microwires with perfectly rectangular hysteresis loops present magnetization reversal through fast domain wall propagation, while the giant magnetoimpedance (GMI) effect in Fe-rich microwires is rather low. However, the lower cost of Fe-rich microwires makes them attractive for magnetic sensors applications. We studied the effect of conventional (furnace) annealing and Joule heating on magnetic-propertied domain wall (DW) dynamics and the GMI effect in two Fe microwires with different geometries. We observed that magnetic softness, GMI effect and domain wall (DW) dynamics can be substantially improved by appropriate annealing. Observed experimental results are discussed considering the counterbalance between the internal stresses relaxation and induced magnetic anisotropy associated with the presence of an Oersted magnetic field during Joule heating.
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页数：14
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