The disparate impact of two types of GMI effect definition on DC Joule-heating annealed Co-based microwires

Si Da Jiang; Da Wei Xing; Wei Dong Fei; Jing Shun Liu; Hong Xian Shen; Wen Bin Fang; Jian Fei Sun

doi:10.1039/c5ra20048b

The disparate impact of two types of GMI effect definition on DC Joule-heating annealed Co-based microwires

Si Da Jiang
, Da Wei Xing
, Wei Dong Fei
, Jing Shun Liu
, Hong Xian Shen
, Wen Bin Fang
, Jian Fei Sun^*

^*Corresponding author for this work

Harbin Institute of Technology
Inner Mongolia University of Technology
Harbin University of Science and Technology

Research output: Contribution to journal › Article › peer-review

10 Scopus citations

Abstract

Based on a comprehensive study of the effect of progressive DC Joule-heating annealing (DJA) on giant magneto-impedance (GMI) properties of melt-extracted amorphous microwires, we systematically analysed the different mechanisms for two types of GMI effect definition. Experimental results show that DJA can improve GMI response characteristics and magnetic field sensitivity (MFS) effectively for both definitions, but ΔZ/Z₀ is enhanced much more than ΔZ/Z_max of the as-cast wires. At 20 MHz, the maximum GMI ratios, as denoted by ΔZ/Z₀ and ΔZ/Z_max, of DJA microwires are enhanced to 582.59% and 639.13%, while the values for the as-cast wires are 69.09% and 520.48% respectively. Meanwhile, the MFS (ξ_max) and equivalent magnetic anisotropy field (H_k) increase to 1346.4%/Oe (ΔZ/Z₀), 2927.9%/Oe (ΔZ/Z_max) and 1.1 Oe, respectively. These significant effects of GMI properties as denoted by Z₀ are mainly attributed to the change of resistivity (ρ_dc) for amorphous microwires induced by DJA. Revealing the mechanism of different effects can also result in the development of a micromagnetic field sensor, especially for geomagnetic sensor applications (∼±1.0 Oe).

Original language	English
Pages (from-to)	103609-103616
Number of pages	8
Journal	RSC Advances
Volume	5
Issue number	125
DOIs	https://doi.org/10.1039/c5ra20048b
State	Published - 10 Nov 2015
Externally published	Yes

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title = "The disparate impact of two types of GMI effect definition on DC Joule-heating annealed Co-based microwires",

abstract = "Based on a comprehensive study of the effect of progressive DC Joule-heating annealing (DJA) on giant magneto-impedance (GMI) properties of melt-extracted amorphous microwires, we systematically analysed the different mechanisms for two types of GMI effect definition. Experimental results show that DJA can improve GMI response characteristics and magnetic field sensitivity (MFS) effectively for both definitions, but ΔZ/Z0 is enhanced much more than ΔZ/Zmax of the as-cast wires. At 20 MHz, the maximum GMI ratios, as denoted by ΔZ/Z0 and ΔZ/Zmax, of DJA microwires are enhanced to 582.59\% and 639.13\%, while the values for the as-cast wires are 69.09\% and 520.48\% respectively. Meanwhile, the MFS (ξmax) and equivalent magnetic anisotropy field (Hk) increase to 1346.4\%/Oe (ΔZ/Z0), 2927.9\%/Oe (ΔZ/Zmax) and 1.1 Oe, respectively. These significant effects of GMI properties as denoted by Z0 are mainly attributed to the change of resistivity (ρdc) for amorphous microwires induced by DJA. Revealing the mechanism of different effects can also result in the development of a micromagnetic field sensor, especially for geomagnetic sensor applications (∼±1.0 Oe).",

author = "Jiang, \{Si Da\} and Xing, \{Da Wei\} and Fei, \{Wei Dong\} and Liu, \{Jing Shun\} and Shen, \{Hong Xian\} and Fang, \{Wen Bin\} and Sun, \{Jian Fei\}",

note = "Publisher Copyright: {\textcopyright} The Royal Society of Chemistry.",

year = "2015",

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T1 - The disparate impact of two types of GMI effect definition on DC Joule-heating annealed Co-based microwires

AU - Jiang, Si Da

AU - Xing, Da Wei

AU - Fei, Wei Dong

AU - Liu, Jing Shun

AU - Shen, Hong Xian

AU - Fang, Wen Bin

AU - Sun, Jian Fei

PY - 2015/11/10

Y1 - 2015/11/10

N2 - Based on a comprehensive study of the effect of progressive DC Joule-heating annealing (DJA) on giant magneto-impedance (GMI) properties of melt-extracted amorphous microwires, we systematically analysed the different mechanisms for two types of GMI effect definition. Experimental results show that DJA can improve GMI response characteristics and magnetic field sensitivity (MFS) effectively for both definitions, but ΔZ/Z0 is enhanced much more than ΔZ/Zmax of the as-cast wires. At 20 MHz, the maximum GMI ratios, as denoted by ΔZ/Z0 and ΔZ/Zmax, of DJA microwires are enhanced to 582.59% and 639.13%, while the values for the as-cast wires are 69.09% and 520.48% respectively. Meanwhile, the MFS (ξmax) and equivalent magnetic anisotropy field (Hk) increase to 1346.4%/Oe (ΔZ/Z0), 2927.9%/Oe (ΔZ/Zmax) and 1.1 Oe, respectively. These significant effects of GMI properties as denoted by Z0 are mainly attributed to the change of resistivity (ρdc) for amorphous microwires induced by DJA. Revealing the mechanism of different effects can also result in the development of a micromagnetic field sensor, especially for geomagnetic sensor applications (∼±1.0 Oe).

AB - Based on a comprehensive study of the effect of progressive DC Joule-heating annealing (DJA) on giant magneto-impedance (GMI) properties of melt-extracted amorphous microwires, we systematically analysed the different mechanisms for two types of GMI effect definition. Experimental results show that DJA can improve GMI response characteristics and magnetic field sensitivity (MFS) effectively for both definitions, but ΔZ/Z0 is enhanced much more than ΔZ/Zmax of the as-cast wires. At 20 MHz, the maximum GMI ratios, as denoted by ΔZ/Z0 and ΔZ/Zmax, of DJA microwires are enhanced to 582.59% and 639.13%, while the values for the as-cast wires are 69.09% and 520.48% respectively. Meanwhile, the MFS (ξmax) and equivalent magnetic anisotropy field (Hk) increase to 1346.4%/Oe (ΔZ/Z0), 2927.9%/Oe (ΔZ/Zmax) and 1.1 Oe, respectively. These significant effects of GMI properties as denoted by Z0 are mainly attributed to the change of resistivity (ρdc) for amorphous microwires induced by DJA. Revealing the mechanism of different effects can also result in the development of a micromagnetic field sensor, especially for geomagnetic sensor applications (∼±1.0 Oe).

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DO - 10.1039/c5ra20048b

M3 - 文章

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ER -

The disparate impact of two types of GMI effect definition on DC Joule-heating annealed Co-based microwires

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