Abstract—
The magnetic-domain structure of the surface of microwires with the composition Fe73.9B13.2Si10.9C2 is studied by magnetic-force microscopy. It is found that removal of the glass shell by chipping leads to distortion of the original magnetic-domain structure. Chemical etching of the glass shell makes it possible to observe the magnetic-domain structure due to the stresses that arise as a result of microwire production. In the absence of an applied magnetic field, a magnetic-domain structure of the surface layer consisting of domain layers inclined to the microwire axis by 45 or 135 degrees is observed. This structure has a close-to-zigzag-like shape. The thickness of the domain layers is not constant and varies from 3 to 5 μm. The application of a constant magnetic field along the microwire axis is found to cause the formation of ring domain layers of various thicknesses (from 1 to 5 μm) with different orientations of the magnetic moment relative to the microwire surface. In a field of 60 Oe along the microwire axis, the magnetic-domain structure consists of only ring layers of domains. Magnetic-field inversion leads to almost complete inversion of the observed domain structure. In this case, complete removal of the magnetic field leads to the formation of a new domain structure of the surface layer. Such a structure is close in shape and position of the domains to the original one, but does not repeat it.
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Aksenov, O.I., Fuks, A.A. & Aronin, A.S. Magnetic-Domain Structure of Iron-Based Microwires after Removal of the Glass Shell by Chipping and Chemical Etching. J. Surf. Investig. 18, 8–13 (2024). https://doi.org/10.1134/S1027451024010038
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DOI: https://doi.org/10.1134/S1027451024010038