scholarly journals Giant Magnetoimpedance Effect in Surface Modified CoFeMoSiB Amorphous Ribbons

2003 ◽  
Vol 20 (12) ◽  
pp. 2246-2249 ◽  
Author(s):  
M. A Cerdeira ◽  
G. V Kurlyandskaya ◽  
A Fernandez ◽  
M Tejedor ◽  
H Garcia-Miquel
2018 ◽  
Vol 185 ◽  
pp. 10003
Author(s):  
Zahra Lotfollahi ◽  
Ahmad Amirabadizadeh ◽  
Alexander P. Safronov ◽  
Galina V. Kurlyandskaya

Giant magnetoimpedance (GMI) effect is a powerful technique for magnetic label detection. Co-based amorphous ribbons are cheap materials showing high GMI effect at low operation frequencies for close to zero magnitostriction compositions. In this work magnetic properties and GMI were studied for CoFeMoSiB amorphous ribbons in as-quenched and surface modified states without and in the presence of water-based ferrofluid with electrostatic stabilization of γ-Fe2O3 nanoparticles. Surface modification by ultrasound treatment resulted in appearance of round defects with average diameter of about 150 micrometers. The GMI difference for as-quenched ribbons in absence and in the presence of ferrofluid was measured for the frequency range of 0.5 to 10 MHz. Although proposed surface modification by the ultrasound treatment did not improve the sensitivity limit for ferrofluid detection, it did not decrease it either. Observed changes of GMI are useful for understanding of functionality of GMI biosensors.


2017 ◽  
Vol 86 ◽  
pp. 15-19 ◽  
Author(s):  
A. Chizhik ◽  
V. Vega ◽  
Abd El-Moez A. Mohamed ◽  
V.M. Prida ◽  
T. Sánchez ◽  
...  

2018 ◽  
Vol 93 ◽  
pp. 63-66
Author(s):  
M. Ipatov ◽  
A. Chizhik ◽  
Abd El-Moez A. Mohamed ◽  
T. Sánchez ◽  
B. Hernando ◽  
...  

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