Giant Magnetoimpedance in Electrodeposited Cobalt on Silver Wires

Pongsakorn JANTARATANA; Chitnarong SIRISATHITKUL

Authors

Pongsakorn JANTARATANA Department of Physics, Faculty of Science, Kasetsart University, Bangkok 10900
Chitnarong SIRISATHITKUL Magnet Laboratory, Molecular Technology Research Unit, School of Science, Walailak University, Nakhon Si Thammarat 80161

Keywords:

Giant magnetoimpedance, magnetic permeability, skin depth, electrodeposition

Abstract

Cobalt of thickness from 1 to 25 mm was coated onto 120 mm-diameter silver wires by electrodeposition. Giant magneto-impedance (GMI) of electrodeposited cobalt on silver wires was measured with ac current from 1 kHz to 1 MHz. Their impedance decreased with a longitudinal magnetic field and saturated under 1.5 kOe. With increasing cobalt thickness, the critical frequency decreased but the GMI ratio increased. A maximum GMI ratio of over 200 % and sensitivity of about 0.5 %/Oe were observed in a 25 mm-thick sample at the frequency of about 500 kHz. The results can be explained by the dependence of the circumferential permeability on the magnetic field and frequency of ac current.

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References

RS Beach and AE Berkowitz. Giant magnetic field dependent impedance of amorphous FeCoSiB wire. Appl. Phys. Lett. 1994; 64, 3652-54.

LV Panina and K Mohri. Magnetoimpedance effect in amorphous wires. Appl. Phys. Lett. 1994; 65, 1189-91.

K Kawashima, I Ogasawara, S Ueno and K Mohri. Asymmetrical magnetoimpedance effect in torsion-annealed Co-rich amorphous wire for MI micro magnetic sensor. IEEE Trans. Magn. 1999; 38, 3610-12.

YF Li, M Vázquez and DX Chen. Giant magnetoimpedance effect and magnetoelastic properties in stress-annealed FeCuNbSiB nanocrystalline wire. IEEE Trans. Magn. 2002; 38, 3096-98.

H Lee, YS Kim and SC Yu. High-frequency magnetoimpedance effect in glass-coated amorphous Co83.2B3.3Si5.9Mn7.6 microwires. J. Mater. Sci. 2003; 21, 115-22.

P Jantaratana and C Sirisathitkul. Giant magnetoimpedance in silicon steels. J. Magn. Magn. Mater. 2004; 281, 399-404.

KJ Jang, CG Kim, SS Yoon and SC Yu. Effect of annealing field on asymmetric giant magnetoimpedance profile in Co-based amorphous ribbon. J. Magn. Magn. Mater. 2000; 215-216, 488-91.

Y Nishive, H Yamadera, N Ohta, K Tsukada and Y Ohmura. Magnetoimpedance effect of a layered CoNbZr amorphous film formed on a polyimide substrate. IEEE Trans. Magn. 2003; 39, 571-75.

T Uchiyama, K Mohri, M Shinkai, A Ohshima, H Honda, T Kobayashi, T Wakabayashi and J Yoshida. Position sensing of magnetite gel using MI sensor for brain tumor detection. IEEE Trans. Magn. 1997; 33, 4266-68.

T Uchiyama, K Mohri, H Itho, K Nakashima, J Ohuchi and Y Sudo. Car traffic monitoring system using MI sensor built-in disk set on the road. IEEE Trans. Magn. 2000; 36, 3670-72.

K Mohri, T Uchiyama, LP Shen, CM Cai and LV Panina. Sensitive Micro magnetic sensor family utilizing magnetoimpedance (MI) and stress-impedance (SI) effects for intelligent measurements and controls. Sens. Actuators A 2001; 91, 85-90.

A Gromov and V Korennivski. Electromagnetic analysis of layered magnetic/conductor structures. J. Phys. D: Appl. Phys. 2000; 33, 773-79.

JM Barandiaran, A Garcia-Arribas, JL Munoz and GV Kurlyandskaya. Influence of magnetization processes and device geometry on the GMI effect. IEEE Trans. Magn. 2002; 38, 3051-66.