Suppression of large Barkhausen jumps in annealed amorphous wires with an imposed twist as a function of current, external axial stress, and axial field

The magnetization and small signal alternating-current permeabilities of transverse-field-annealed amorphous magnetostrictive wires (Fe77.5B15Si7.5) with a fixed twist of 400 deg/m were examined as a function of applied axial tensile stress and axial direct-current (dc) currents. We observe multiple...

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Bibliographic Details
Published in:Journal of applied physics 1991-11, Vol.70 (10), p.6519-6521
Main Authors: WUN-FOGLE, M, RESTORFF, J. B, CLARK, A. E, SAVAGE, H. T
Format: Article
Language:English
Subjects:
Applied sciences
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Exact sciences and technology
Magnetic properties and materials
Magnetomechanical and magnetoelectric effects, magnetostriction
Metals. Metallurgy
Physics
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Summary:The magnetization and small signal alternating-current permeabilities of transverse-field-annealed amorphous magnetostrictive wires (Fe77.5B15Si7.5) with a fixed twist of 400 deg/m were examined as a function of applied axial tensile stress and axial direct-current (dc) currents. We observe multiple-featured magnetization curves which we attribute to the inverse Wiedemann effect, as well as a near total suppression of the large Barkhausen jumps when a dc current is flowing through the wire. Several properties of the wire depend on stress and would be useful for sensor applications; figures of merit of 1700–2600 for torque sensors were obtained.
ISSN:0021-8979
1089-7550
DOI:10.1063/1.349893