scholarly journals Magnetoimpedance Response and Field Sensitivity in Stress-Annealed Co-Based Microwires for Sensor Applications

Sensors ◽  
2020 ◽  
Vol 20 (11) ◽  
pp. 3227
Author(s):  
David González-Alonso ◽  
Lorena González-Legarreta ◽  
Paula Corte-León ◽  
Valentina Zhukova ◽  
Mihail Ipatov ◽  
...  
Keyword(s):  
Frequency Dependence ◽  
Applied Stress ◽  
Soft Magnetic Materials ◽  
Fine Tuning ◽  
Soft Magnetic ◽  
Giant Magnetoimpedance ◽  
Sensor Applications ◽  
Future Design ◽  
Gmi Effect ◽  
Field Sensitivity

Amorphous soft magnetic microwires have attracted much attention in the area of sensor applications due to their excellent properties. In this work, we study the influence of annealing treatments (stress and conventional) in the giant magnetoimpedance (GMI) response and the field sensitivity of the soft magnetic Co69.2Fe3.6Ni1B12.5Si11Mo1.5C1.2 glass-coated microwires. Here we report a remarkable and simultaneous enhancement of GMI effect and field sensitivity. The highest sensitivity of 104%/Oe and the GMI response of 234% were achieved for 300 °C stress-annealed samples at 472 and 236 MPa, respectively. Additionally, we found that stress-annealed microwires exhibit a frequency dependence on maximal GMI response and field sensitivity. These findings are obtained by fine-tuning their magnetoeslastic anisotropies through stress-annealing treatments of as-prepared microwires at the proper temperature and axial applied stress upon annealing. We hope that the results presented here widen the scope of investigations for the future design of soft magnetic materials for sensor purposes.

scholarly journals Giant Magnetoimpedance (GMI) Effect and Field Sensitivity of Ferrofluid Coated Co66Fe2Si13B15Cr4 Soft Magnetic Amorphous Microwire

2014 ◽  
Vol 54 ◽  
pp. 16-22 ◽  
Author(s):  
Tarun Kumar Das ◽  
Sushil Kumar Mandal ◽  
Asish Kumar Panda ◽  
Soumya Bhattacharya ◽  
Pallab Banerji ◽  
...  
Keyword(s):  
Soft Magnetic ◽  
Giant Magnetoimpedance ◽  
Amorphous Microwire ◽  
Gmi Effect ◽  
Field Sensitivity

Giant Magnetoimpedance in as Quenched Fe Based Nanocrystalline Ribbons

2005 ◽  
Vol 475-479 ◽  
pp. 2219-2222 ◽  
Author(s):  
Ji Fan Hu ◽  
Hong Wei Qin ◽  
Minhua Jiang ◽  
Bo Li ◽  
Dongliang Zhao ◽  
...  
Keyword(s):  
Grain Size ◽  
Magnetic Materials ◽  
Melt Spinning ◽  
Experimental Results ◽  
Soft Magnetic Materials ◽  
Soft Magnetic ◽  
Giant Magnetoimpedance ◽  
Giant Magnetoimpedance Effect ◽  
Additional Annealing ◽  
Melt Spinning Technique

FeCuNbSiB and FeZrBCu nanocrystalline ribbons can be obtained directly through the melt- spinning technique without additional annealing processes. The giant magnetoimpedance can be observed in FeCuNbSiB and FeZrBCu as quenched ribbons. The addition of Cu improves the nano-crystallization of a-Fe(Si) or a-Fe phase and reduces the grain size in FeCuNbSiB and FeZrBCu as quenched ribbons, which enhances the magnetoimpedance via increasing the variation of permeability under fields. The present experimental results reveal a novel route to fabricate the Fe based nanocrystalline soft magnetic materials with giant magnetoimpedance effect.

Improvement of Giant Magneto-Impedance Effect in Fe-Based Nanocrystalline Wires

2011 ◽  
Vol 284-286 ◽  
pp. 2303-2306
Author(s):  
Su Qin Feng ◽  
Yin Feng Li ◽  
Jian Yong Wang ◽  
Chun Hui Feng ◽  
Shuang Yi Zhao ◽  
...  
Keyword(s):  
Tensile Stress ◽  
Magnetic Sensors ◽  
Substitution Effects ◽  
Soft Magnetic ◽  
Gmi Effect ◽  
Annealing Conditions ◽  
Field Sensitivity ◽  
Hysteretic Effect ◽  
Giant Magneto Impedance ◽  
Magnetic Wires

In order to obtain materials with more ideal GMI effect, (DZ/Z）max, the substitution effects of R (R = Co, Ni and Cr) for Fe in Fe63.5R10Cu1Nb3Si13.5B9soft magnetic wires have been studied. We found that although the Finemet composition shown excellent GMI effect, the substitution of Co can raise notably the field sensitivity, Q, Ni makes a little improvements of (DZ/Z）max, and Q, and Cr diminishes the undesirable hysteretic effect. In additions, the influence of annealing conditions upon the GMI effect of the best composition Fe63.5Cr10Cu1Nb3Si13.5B9was also investigated. It indicated that the sample obtained by the ways of Joule heating under the application of suitable tensile stress exhibits 200% and 30%¤Oe for (DZ/Z）max and Q, respectively. This sample can serve as a proper choice for magnetic sensors.

scholarly journals Sensor Applications of Soft Magnetic Materials Based on Magneto-Impedance, Magneto-Elastic Resonance and Magneto-Electricity

Sensors ◽  
2014 ◽  
Vol 14 (5) ◽  
pp. 7602-7624 ◽  
Author(s):  
Alfredo García-Arribas ◽  
Jon Gutiérrez ◽  
Galina Kurlyandskaya ◽  
José Barandiarán ◽  
Andrey Svalov ◽  
...  
Keyword(s):  
Magnetic Materials ◽  
Soft Magnetic Materials ◽  
Soft Magnetic ◽  
Sensor Applications

Frequency Dependence of the Coercivity of Soft Magnetic Materials

2012 ◽  
Vol 48 (4) ◽  
pp. 1473-1476 ◽  
Author(s):  
R. Groessinger ◽  
N. Mehboob ◽  
M. Kriegisch ◽  
A. Bachmaier ◽  
R. Pippan
Keyword(s):  
Frequency Dependence ◽  
Magnetic Materials ◽  
Soft Magnetic Materials ◽  
Soft Magnetic

Giant Magnetoimpedance Effect in a Co-Based Microwire for Quick-Response Magnetic Sensor Applications

Volume 3 ◽  
2004 ◽  
Author(s):  
Manh-Huong Phan ◽  
Hua-Xin Peng ◽  
Michael R. Wisnom ◽  
Seong-Cho Yu
Keyword(s):  
Giant Magnetoimpedance ◽  
New Approach ◽  
Giant Magnetoimpedance Effect ◽  
Sensor Applications ◽  
Sensing Applications ◽  
Stress Sensors ◽  
Field Sensitivity ◽  
Amorphous Microwires ◽  
Dc Current ◽  
Linear Field

Development of autobiased linear field sensors based on asymmetrical giant magnetoimpedance (AGMI) effect in Corich amorphous microwires upon the application of a biasing dc current is approached. Upon biasing dc currents, the highest field sensitivity of AGMI of 20%/Oe was found at a biasing dc current of 10 mA. The reduction of the AGMI under a biasing dc current of 25 mA and a frequency of 10 MHz has been observed. The result indicates that an optimum design of autobiased linear field sensors based on AGMI can be achieved by applying the biasing dc current of 10 mA and in the frequency range of 100 kHz–5 MHz. A stress-induced change in AGMI has also been found in these microwires and this offers a new approach to the development of stress sensors. All these features make the Co-rich amorphous microwire a multifunctional and smart material that can be used for different purposes of sensing applications.

scholarly journals Development of Magnetic Microwires for Magnetic Sensor Applications

Sensors ◽  
2019 ◽  
Vol 19 (21) ◽  
pp. 4767 ◽  
Author(s):  
Valentina Zhukova ◽  
Paula Corte-Leon ◽  
Mihail Ipatov ◽  
Juan Maria Blanco ◽  
Lorena Gonzalez-Legarreta ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Hysteresis Loops ◽  
Magnetic Sensor ◽  
Internal Stresses ◽  
Soft Magnetic ◽  
Magnetoelastic Anisotropy ◽  
Sensor Applications ◽  
Gmi Effect ◽  
Magnetic Softness ◽  
Magnetic Wires

Thin magnetic wires can present excellent soft magnetic properties (with coercivities up to 4 A/m), Giant Magneto-impedance effect, GMI, or rectangular hysteresis loops combined with quite fast domain wall, DW, propagation. In this paper we overview the magnetic properties of thin magnetic wires and post-processing allowing optimization of their magnetic properties for magnetic sensor applications. We concluded that the GMI effect, magnetic softness or DW dynamics of microwires can be tailored by controlling the magnetoelastic anisotropy of as-prepared microwires or controlling their internal stresses and domain structure by appropriate thermal treatment.

scholarly journals Magnetic Microwires with Unique Combination of Magnetic Properties Suitable for Various Magnetic Sensor Applications

Sensors ◽  
2020 ◽  
Vol 20 (24) ◽  
pp. 7203
Author(s):  
Paula Corte-Leon ◽  
Valentina Zhukova ◽  
Alexandr Chizhik ◽  
Juan Maria Blanco ◽  
Mihail Ipatov ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
High Performance ◽  
Cost Effective ◽  
Helical Structure ◽  
Soft Magnetic Materials ◽  
Unique Combination ◽  
Magnetic Microwires ◽  
Sensor Applications ◽  
Gmi Effect ◽  
Surface Magnetization

There is a pressing demand to improve the performance of cost-effective soft magnetic materials for use in high performance sensors and devices. Giant Magneto-impedance effect (GMI), or fast single domain wall (DW) propagation can be observed in properly processed magnetic microwires. In this paper we have identified the routes to obtain microwires with unique combination of magnetic properties allowing observation of fast and single DW propagation and GMI effect in the same microwire. By modifying the annealing conditions, we have found the appropriate regimes allowing achievement of the highest GMI ratio and the fastest DW dynamics. The observed experimental results are discussed considering the radial distribution of magnetic anisotropy and the correlation of GMI effect, and DW dynamics with bulk and surface magnetization processes. Studies of both Fe- and Co-rich microwires, using the magneto-optical Kerr effect, MOKE, provide information on the magnetic structure in the outer shell of microwires. We have demonstrated the existence of the spiral helical structure in both studied microwires. At the same time, torsion mechanical stresses induce helical bistability in the same microwires, which allow us to consider these microwires as materials suitable for sensors based on the large Barkhausen jump.

GIANT MAGNETOIMPEDANCE EFFECT IN AS-DEPOSITED (Fe88Zr7B5)0.97Cu0.03 AMORPHOUS FILMS

2005 ◽  
Vol 19 (21) ◽  
pp. 3405-3412
Author(s):  
WEI-PING CHEN ◽  
SHU-QIN XIAO ◽  
YI-HUA LIU
Keyword(s):  
Amorphous Film ◽  
Close Correlation ◽  
Soft Magnetic ◽  
Amorphous Films ◽  
Giant Magnetoimpedance ◽  
Giant Magnetoimpedance Effect ◽  
Gmi Effect ◽  
Radio Frequency Sputtering ◽  
Transverse Permeability ◽  
Frequency Dependences

The giant magnetoimpedance (GMI) effect has been observed in as-deposited ( Fe 88 Zr 7 B 5)0.97 Cu 0.03 amorphous film prepared by radio frequency sputtering. The maximum magnetoimpedance ratio of 17% was obtained at a frequency of 13 MHz. The field and frequency dependences of magnetoimpedance, magnetoresistance, magnetoreactance and transverse permeability have been investigated in detail. Our results show that a close correlation between longitudinal GMI and transverse permeability exists. Our results indicate that the amorphous ( Fe 88 Zr 7 B 5)0.97 Cu 0.03 films have good soft magnetic properties and remarkable GMI effect even though in the as-deposited state.

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