Wave reversal mode in permalloy wire-tube nanostructures

Wave reversal mode in permalloy wire-tube nanostructures

We have investigated hysteresis curves and magnetization reversal mechanisms in permalloy wire-tube nanostructures when an external magnetic field is applied perpendicular to the axis of the nanostructure, in the x direction. Our results show that the nanotube reverses its magnetization through the...

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Bibliographic Details
Published in:AIP advances Vol. 12; no. 3; pp. 035044 - 035044-5
Main Authors: Arciniegas Jaimes, Diana M., Broens, Martín I., Saavedra, Eduardo, Luna, Noelia Bajales, Escrig, Juan
Format: Journal Article
Language:English
Published: Melville American Institute of Physics 01-03-2022
AIP Publishing LLC
Subjects:
Domain walls
Ferrous alloys
Hysteresis
Magnetic alloys
Magnetic domains
Magnetism
Magnetization reversal
Nanostructure
Nanowires
Segments
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Summary:We have investigated hysteresis curves and magnetization reversal mechanisms in permalloy wire-tube nanostructures when an external magnetic field is applied perpendicular to the axis of the nanostructure, in the x direction. Our results show that the nanotube reverses its magnetization through the wave reversal mechanism, while the nanowire does so through pseudo-coherent rotation, according to the literature. The wire-tube nanostructure exhibits a more complex reversal mechanism, where each segment begins to revert depending on whether it is a wire or tube segment, but quickly the entire nanostructure adopts the wire segment reversal mechanism as its own, considerably reducing the area within of the hysteresis curve exhibited by the nanostructure. The possibility to alter the magnetization reversal mode in such nanostructures provides an attractive way to control the motion of the magnetic domain walls.
ISSN:2158-3226
2158-3226
DOI:10.1063/9.0000312