Giant magnetoimpedance effect in a glass-coated microwire LC-resonator for high-frequency sensitive magnetic sensor applications

2007 ◽  
Vol 443 (1-2) ◽  
pp. 32-36 ◽  
Author(s):  
Anh-Tuan Le ◽  
Wan-Shik Cho ◽  
Heebok Lee ◽  
Manuel Vázquez ◽  
Chong-Oh Kim
Keyword(s):  
High Frequency ◽  
Magnetic Sensor ◽  
Giant Magnetoimpedance ◽  
Giant Magnetoimpedance Effect ◽  
Sensor Applications ◽  
Lc Resonator

Excellent Response of Giant Magnetoimpedance Effect in a Glass-Coated Microwire LC-Resonator

2007 ◽  
Vol 124-126 ◽  
pp. 875-878
Author(s):  
Anh Tual Le ◽  
Chong Oh Kim ◽  
Hee Bok Lee
Keyword(s):  
Magnetic Field ◽  
External Magnetic Field ◽  
Resonance Frequency ◽  
Phase Angle ◽  
Resonance Phenomenon ◽  
Giant Magnetoimpedance ◽  
Giant Magnetoimpedance Effect ◽  
Excellent Response ◽  
Sensor Applications ◽  
Lc Resonator

A novel excellent response of giant magnetoimpedance effect was found out in a magnetic LC-resonator consisting of a glass-coated amorphous Co83.2B3.3Si5.9Mn7.6 microwire and two capacitive cylindrical electrodes at the end of the microwire. The shapes of the impedance curves plotted vs. applied external dc-field varied dramatically with increasing frequency. The phase angle was also strongly found to be dependent on this field. The impedance curves were changing abruptly at near the resonance frequency. Because the permeability of ultra soft magnetic microwire is changing rapidly as a function of external magnetic field, the resonance frequency as well as impedance of the LC-resonator also changes drastically with respect to the external magnetic field. The maximum magnetoimpedance ratio value was reached as much as 1,600%. The sudden changes of phase angle as much as 180 degree evidenced the occurrence of resonance phenomenon. These results are promising for developing ultra-high sensitive magnetic sensor applications.

scholarly journals High Frequency Behavior of La0.7Sr0.3MnO3 with Giant Magnetoimpedance Effect

2002 ◽  
Vol 43 (3) ◽  
pp. 523-525 ◽  
Author(s):  
Jifan Hu ◽  
Hongwei Qin ◽  
Juan Chen ◽  
Zhenxi Wang
Keyword(s):  
High Frequency ◽  
Giant Magnetoimpedance ◽  
Giant Magnetoimpedance Effect ◽  
Frequency Behavior

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.

A class of micromachined magnetic resonator for high-frequency magnetic sensor applications

2006 ◽  
Vol 99 (8) ◽  
pp. 08B309 ◽  
Author(s):  
Yong-Seok Kim ◽  
Seong-Cho Yu ◽  
Hong Lu ◽  
Jeong-Bong Lee ◽  
Heebok Lee
Keyword(s):  
High Frequency ◽  
Magnetic Sensor ◽  
Sensor Applications ◽  
Magnetic Resonator

High frequency giant magnetoimpedance effect of a stress-annealed Fe-rich glass-coated microwire

2019 ◽  
Vol 802 ◽  
pp. 112-117 ◽  
Author(s):  
P. Corte-León ◽  
V. Zhukova ◽  
M. Ipatov ◽  
J.M. Blanco ◽  
J. Gonzalez ◽  
...  
Keyword(s):  
High Frequency ◽  
Giant Magnetoimpedance ◽  
Giant Magnetoimpedance Effect

Giant Magnetoimpedance in Fe73.5Cu1Nb2V1Si13.5B9 Nanocrystalline Ribbons

2014 ◽  
Vol 809-810 ◽  
pp. 99-104 ◽  
Author(s):  
Huai Gu Hu ◽  
Yang Ming Hao ◽  
Chun Jing Gao ◽  
Yan Zhao Wu ◽  
Fei Fei Liang
Keyword(s):  
High Frequency ◽  
High Performance ◽  
Annealing Temperature ◽  
Low Cost ◽  
Low Frequency ◽  
Partial Substitution ◽  
Giant Magnetoimpedance ◽  
Giant Magnetoimpedance Effect ◽  
Average Grain Size ◽  
Optimum Annealing Temperature

In the present work, the giant magnetoimpedance effect has been found in Fe73.5Cu1Nb2V1Si13.5B9nanocrystalline ribbons. The optimum annealing temperature for obtaining largest GMI is about 550°C. Fe73.5Cu1Nb2V1Si13.5B9with average grain size of 15 nm after annealing at 550°C for 30 min presents a magnetoimpedance of-74% at 700 kHz under H=90 Oe. The MI effect at high frequency is due to the change of Z via the variation of permeability or the penetration depth under the external field. The positive magnetoimpedance ΔZ/Z is 36% and positive magnetoresistance ΔR/R is 79% at H= 10 Oe and f=5MHz. We observe a huge magnetoreactance ΔX/X of –375% at a very low frequency of 50 kHz, which is a magnetoinduction effect due to the movement of domain wall. The smaller GMI for nanocrystalline Fe73.5Cu1Nb2V1Si13.5B9ribbons annealed above 550°C is mainly connected with the decrease of permeability due to the precipitation of Fe2B phase in ribbons. Our results show that the partial substitution of expensive Nb by cheap V in FeCuNbSiB could be a successful way to prepare the GMI materials with high performance and low cost.

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