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Magnetic structure and hysteresis characteristics of Ni49Fe18Ga27Co6 shape memory alloy crystals
Kharitonskii P. V.
1, Nikolaev V. I. 1, Krymov V. M.1, Timashov R. B.1, Sergienko E. S. 1,2, Dubeshko D. D. 2, Gareev K.G.
1,3, Ralin A. Yu. 4
1Ioffe Institute, St. Petersburg, Russia
2St. Petersburg State University, St. Petersburg, Russia
3St. Petersburg State Electrotechnical University “LETI", St. Petersburg, Russia
4Far Eastern Federal University, Vladivostok, Russia
2St. Petersburg State University, St. Petersburg, Russia
3St. Petersburg State Electrotechnical University “LETI", St. Petersburg, Russia
4Far Eastern Federal University, Vladivostok, Russia
Email: peterkh@yandex.ru
The magnetic properties of Ni49Fe18Ga27Co6 shape memory alloy crystals have been studied. The influence of features of the crystal structure on the parameters of magnetic hysteresis is shown. For Ni49Fe18Ga27Co6 alloy, the magnetic state of which is multi-domain, an approach to estimating the hysteresis characteristics is proposed based on a model of magnetostatically interacting single-domain particles with effective spontaneous magnetization. Keywords: shape memory alloy, twinning, magnetic domains, magnetic hysteresis, magnetization, coercivity, magnetostatic interaction.
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