Open AccessPreparation of a SiO 2 ‐covered amorphous CoFeSiB microwire and study on the current amplitude effect on the transverse giant magnetoimpedance
Author(s) -
Wang Tao,
He Yi,
Chen Yuyi,
Huang Dongya,
Yang Jun,
Rao Jinjun,
Li Hengyu,
Wang Bicong,
Wang Bowen,
Liu Mei
Publication year - 2019
Publication title -
micro and nano letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.25
H-Index - 31
ISSN - 1750-0443
DOI - 10.1049/mnl.2018.5547
Subject(s) - giant magnetoimpedance , materials science , giant magnetoresistance , amorphous solid , amplitude , melt spinning , transverse plane , composite material , current (fluid) , magnetometer , current density , condensed matter physics , nuclear magnetic resonance , metallurgy , magnetoresistance , spinning , magnetic field , electrical engineering , optics , physics , chemistry , organic chemistry , structural engineering , quantum mechanics , engineering
A SiO 2 ‐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 SiO 2 tube and heated by i nduced current (600 A) for 50 s, then the SiO 2 ‐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 SiO 2 ‐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.