The phenomenology of the magnetic hysteresis loops in multilayer microwires α-Fe/DyPrFeCoB

Morgunov R.B., Koplak O.V., Talantsev A.D., Korolev D.V., Piskorsky V.P., Valeev R.A.
UDC
530.152.1530.152.1
DOI
10.18577/2307-6046-2019-0-7-67-75
Article PDF (Russian) (698.86 KB)
How to cite
Morgunov R.B., Koplak O.V., Talantsev A.D., Korolev D.V., Piskorsky V.P., Valeev R.A. The phenomenology of the magnetic hysteresis loops in multilayer microwires α-Fe/DyPrFeCoB // Proceedings of VIAM. 2019. No. 7. DOI: 10.18577/2307-6046-2019-0-7-67-75. URL: https://test.viam.ru/en/journal/2019/7/8
Keywords
multilayered microwires, ferromagnetic amorphous alloys, magnetostriction, exchange bias.
Abstract

The shapes of the magnetic hysteresis loops recorded with a Kerr microscope at different points of the α-Fe/DyPrFeCoB microwire were analyzed. Depending on the distance from the ends of the microwire, where the demagnetization field makes a significant contribution to the magnetization, hysteresis loops of various forms were obtained. The micro-wire fragments that are most significant for practical use demonstrate a rectangular hysteresis loop with exchange bias, as well as a hysteresis loop with 4 equilibrium levels of magnetization like a spin-valve device. These data indicate a high practical potential of the obtained microwires for the manufacture of magnetic field, mechanical stress and temperature sensors from them.

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