Preparation of a SiO2‐covered amorphous CoFeSiB microwire and study on the current amplitude effect on the transverse giant magnetoimpedance. (3rd April 2019)

• Record Type: Journal Article
• Authors: Wang, Tao; He, Yi; Chen, Yuyi; Huang, Dongya; Yang, Jun; Rao, Jinjun; Li, Hengyu; Wang, Bicong; Wang, Bowen; Liu, Mei
• Is Part Of: Micro & nano letters. Volume 14:Number 4(2019)
• Page Start: 436
• Page End: 439
• Publication Date: 2019-04-03
• Subjects: giant magnetoresistance -- boron alloys -- amorphous magnetic materials -- magnetic permeability -- copper alloys -- soft magnetic materials -- cobalt alloys -- silicon alloys -- melt spinning -- iron alloys -- silicon compounds; current amplitude effect -- amorphous microwire -- transverse giant magnetoimpedance -- melt spinning technique -- giant magnetoresistance -- giant magnetoreactance effect -- multidimension magnetometry -- soft magnetic materials -- SiO2‐CoFeSiB; Nanotechnology -- Periodicals; Nanostructures -- Periodicals; Microtechnology -- Periodicals; 620.5
• DOI: 10.1049/mnl.2018.5547
• Languages: English
• ISSNs: 1750-0443

Abstract

Abstract : A SiO2 ‐covered amorphous wire was prepared by the melt spinning technique for investigation of the current amplitude effect on the giant magnetoimpedance (GMI). The raw alloy (CoFeSiB) was placed in a SiO2 tube and heated by i nduced current (600 A) for 50 s, then the SiO2 ‐covered amorphous wire was formed through external traction and cooling water. The current amplitude effects on the transverse GMI, giant magnetoresistance (GMR) and giant magnetoreactance (GMX) in the SiO2 ‐covered amorphous CoFeSiB wire were studied thoroughly. It was observed that the transverse GMI ratio, GMR ratio, and GMX ratio all increase with decreasing the current amplitude, demonstrating the possibility of using them to design low‐consumption, high‐sensitive and muti‐dimension magnetometer.