Influence of applied tensile stress on the magnetic behaviour of Co-rich amorphous microwires

Gudoshnikov Sergey; Ljubimov Boris; Palvanov Pavel; Prokhorova Yu.; Skomarovski V.; Usov Nikolai; Torcunov Alexander

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GUDOSHNIKOV, Sergey, LJUBIMOV, Boris, PALVANOV, Pavel, PROKHOROVA, Yu., SKOMAROVSKI, V., USOV, Nikolai, TORCUNOV, Alexander. Influence of applied tensile stress on the magnetic behaviour of Co-rich amorphous microwires. In: Physica Status Solidi (A) Applications and Materials Science, 2009, vol. 206, pp. 625-629. ISSN 1862-6300. DOI: https://doi.org/10.1002/pssa.200881257

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Physica Status Solidi (A) Applications and Materials Science

Volumul 206 / 2009 / ISSN 1862-6300

Influence of applied tensile stress on the magnetic behaviour of Co-rich amorphous microwires

DOI:https://doi.org/10.1002/pssa.200881257

Pag. 625-629

Gudoshnikov Sergey¹, Ljubimov Boris¹, Palvanov Pavel¹, Prokhorova Yu.¹, Skomarovski V.¹, Usov Nikolai¹, Torcunov Alexander²

¹ Pushkov Institute of Terrestrial Magnetism, Ionosphere and Radiowave Propagation, Russian Academy of Sciences,
² AmoTec Ltd, Chișinău

Disponibil în IBN: 4 octombrie 2023

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It is shown that Co-rich microwires with definitely negative magnetostriction have nearly linear axial magnetization cur-ves with a very small remanence, because they are magnet-ized circumferentially in the absence of an applied magnetic field. For these wires a complete set of material parameters, i.e. saturation magnetization, magnetostriction constant and characteristic amplitude of the residual quenching stress is obtained by means of careful measurement of the wire re-sponse under tensile stress to slowly varying applied magne-tic field. Using the same technique we demonstrate also the existence of a longitudinally magnetized core for Co-rich wires having hysteresis loops with finite remanence. The fi-nite remanence for these wires is explained assuming the magnetostriction coefficient to be radial dependent, so that it may change sign in a certain internal point along the wire ra-dius.

Cuvinte-cheie
hysteresis, Hysteresis loops, Magnetic fields, Magnetic materials, Magnetostriction, Magnetostrictive devices, Magnets, Quenching, saturation magnetization, Tensile stress, Wire

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