Physics of the Solid State
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Formation of domain structure in laser-amorphized regions of PrDyFeCoB microwires
Dvoretskaya E.V.
1, Morgunov R.B.
1,2
1Federal Research Center of Problems of Chemical Physics and Medicinal Chemistry RAS, Сhernogolovka, Russia
2Tambov State Technical University, Tambov, Russia
2Tambov State Technical University, Tambov, Russia
Email: dvoretskaya95@yandex.ru
Local irradiation of the polycrystalline microwire PrDyFeCoB creates a thin layer of amorphous-crystalline material with a depth of 2-3 μm on its surface. This soft magnetic material with a coercive force of 10 Oe is divided into domains with magnetization directed in the plane of the surface layer. The motion of the domain wall with increasing magnetic field and the absorption of domains of reverse magnetization is the main mechanism in the surface layer. In locally amorphized regions, the dependence of the domain wall velocity on the magnetic field corresponds to the creep mode of domain walls. In completely amorphous microwires, the domain motion velocity is two orders of magnitude higher and demonstrates a transition from the creep mode to the sliding mode. Keywords: microstructures, magnetic domain structure, laser amorphization, micromagnets, additive technologies.
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