Magnetostatic interactions between two magnetic wires

Abstract

The results of the magnetic dipolar field in a simple set of two amorphous ferromagnetic wires of composition Fe77.5Si12.5B15 placed side by side are presented. Owing to their peculiar domain structure, they could, in principle, be approximated by macroscopic magnetic dipoles, allowing the analysis of the magnetostatic field between these magnetic entities. Magnetization measurements as a function of the distance between the parallel wires were performed. Results can be explained considering the magnetostatic field created by one wire in the neighboring one. It is clearly shown that this field is responsible for changes of the reversal field of the wires, leading to the appearance of plateaux during the demagnetization process. Instead of pure dipolar model that does not fit experimental data, a multipolar model has been developed, showing a rather good agreement with the experimental results.

Ferromagnetic resonance of magnetostatically coupled shifted chains of nanoparticles in an oblique magnetic field

“…3 of Ref. 27. The same conclusion regarding the validity of this model was reached in other works comparing theory to the results of other experiments 23, 26, and 36.…”

Dipolar interactions in arrays of ferromagnetic nanowires: A micromagnetic study

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Colossal heating efficiency via eddy currents in amorphous microwires with nearly zero magnetostriction

“…Once the magnetic behaviour of short MWs has been established, it is interesting to know which is the role of magnetostatic interactions when several short MWs are put side by side. The previous works report that the magnetic behaviour can change dramatically when 1 or 2 MWs are put side by side as a consequence of the magnetostatic interactions [40][41][42] . As previously established, the short length of the MWs induces a domain structure with the magnetization along the MWs.…”