Results 191 to 200 of about 18,664 (232)

The thermal and stress effect on GMI in amorphous wires

Journal of Magnetism and Magnetic Materials, 2002
We report results on the magneto-impedance (MI) effect in CoFeSiB amorphous wires with and without glass cover and a composite wire under heating up to about 180°C which is much less than the crystallisation one and internal longitudinal stresses. The changing of the MI effect with low-temperature heating was irreversible and strongly depended on the ...
A Radkovskaya, A.A Rakhmanov, N Perov, P Sheverdyaeva, A.S Antonov   +4 more
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Effect of tensile and torsion on GMI in amorphous wire

Journal of Magnetism and Magnetic Materials, 1999
Abstract GMI effect, Δ Z/Z = [ Z ( H ) − Z ( H max )]/ Z ( H max ) has been measured in (Fe 0.94 Co 0.06 ) 72.5 B 15 Si 12.5 wire under tensile, σ ten , and torsional, σ tor , stresses. Generally Δ Z/Z ( H ) dependence has a non-monotonic shape with a maximum at certain axial magnetic field, H m .
J.M. Blanco, A. Zhukov, J. Gonzalez
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High √ȼ?? frequency GMI effect in glass-coated amorphous wires

INTERMAG 2006 - IEEE International Magnetics Conference, 2006
In this paper the GMI effect at high frequency region (between 10 MHz and 500 MHz) in different families of amorphous microwires (Fe-rich, with positive magnetostriction constant, Co-rich with negative magnetostriction constant and Co-Fe-rich with nearly-zero magnetostriction constant) fabricated by the Taylor-Ulitovsky method.
C. Garcia, A. Zhukov, J. Gonzalez, V. Zhukova, J. Blanco   +4 more
openaire   +1 more source

Ring shaped magnetic field transducer based on the GMI effect

Measurement Science and Technology, 2008
In this paper the design of a magnetic-field-to-voltage transducer based on the giant magnetoimpedance phenomenon (GMI) is proposed, characterized by an innovative geometric configuration. In order to attain the best near-field sensibility and far-field immunity, the transducer's sensitive element and electronic circuit were planned and implemented. By
F Pompéia, L A P Gusmão, C R Hall Barbosa, E Costa Monteiro, L A P Gonçalves, F L A Machado   +5 more
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Influence of alloy composition on GMI effect in amorphous ribbons

AIP Conference Proceedings, 2018
The paper presents the comparative study of Giant Magneto Impedance (GMI) effect in amorphous ribbons of different composition. In paper fundamental aspects of GMI effect, designed measuring stand and obtained results were described. Ribbons with dimension: 1 mm wide, 50 mm long, 22 µm thick in as-cast state, have been investigated with exciting ...
Piotr Gazda, Michał Nowicki, Roman Szewczyk   +2 more
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Magnetization Process and GMI Effect in As-Cast Nanocrystalline Microwires

IEEE Transactions on Magnetics, 2010
Results on the axial and circumferential magnetization processes in as-cast nanocrystalline glass-coated microwires are reported for the first time. Glass removal induces a peculiar change in the shape of the axial hysteresis loop. The initially rectangular axial hysteresis loop becomes almost anhysteretic after glass removal as a consequence of a ...
Sorin Corodeanu, Tibor-Adrian Ovari, Nicoleta Lupu, Horia Chiriac   +3 more
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Numerical modelling of GMI effect in soft magnetic amorphous ribbons

Journal of Magnetism and Magnetic Materials, 2004
A numerical simulation model based on Machado et al. [J. Appl. Phys. 79 (1996) 6558] was developed to study the relaxation time and GMI in a series of Co-and Fe-based commercial alloys in the ribbon form as a function of excitation frequency and DC bias field. In Machado et al's model the relaxation time was considered as constant.
I.Z. Rahman, A. Boboc, Md. Kamruzzaman, M.A. Rahman   +3 more
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GMI effect of Fe73.5−xCrxCu1Nb3Si13.5B9 amorphous and nanocrystalline soft wires

Journal of Magnetism and Magnetic Materials, 2002
Abstract Giant magneto-impedance, GMI, effect of Fe 73.5− x Cr x Cu 1 Nb 3 Si 13.5 B 9 ( x =0 and 10) amorphous and nanocrystalline soft wires has been measured at the frequency range from 0.005 up to 5 MHz as a function of the varying DC axial field up to ±140 Oe.
Y.-F Li, M Vázquez, D.-X Chen
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Effect of Nanocrystallization on Magnetic Properties and GMI Effect of Microwires

IEEE Transactions on Magnetics, 2014
We studied giant magnetoimpedance (GMI) effect and magnetic properties of FINEMET-type FeCuNbSiB microwires. We observed that the GMI effect and magnetic softness of glass-coated microwires produced by the Taylor–Ulitovski technique can be tailored either controlling magnetoelastic anisotropy of as-prepared FeCuNbSiB microwires or controlling their ...
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GMI effect in amorphous wires with creep-induced magnetic anisotropy

Sensors and Actuators A: Physical, 1997
Abstract Non-magnetostrictive Co68.15Fe4.35Si12.55B15 amorphous wires (UNITIKA, AC-20) prepared by the in-rotating-water quenching method were investigated. The samples were stress-relieved by Joule heating with the current 540 mA for 2 min to eliminate internal stresses induced during the quenched.
J. Pokorný, L. Kraus
openaire   +1 more source