Abstract

In this work, we study a magnetic nanowire system composed of finite layers, forming a nanobulk. The interaction between the layers (inter-layers) is given by an exchange term [Formula: see text] and the interactions within each layer (intra-layer) are given by a magneto-static interaction energy between the nanowires. We propose to create a geometrical pattern inside of each nanobulk in order to decrease the magneto-static energy through three geometrical configurations of the nanobulk: (i) rectangular–rectangular, (ii) rectangular-cylindrical and (iii) cylindrical–cylindrical. In addition, we incorporate surface/interface effects (another material) to study energy variations inside the nanobulk. As a result, we show that there are certain geometries that minimize drastically the magneto-static energy, also that when the intensity of the [Formula: see text] coupling between the layers is too intense it implies that the energy tends to dissipate inside the nanobulk. In addition, a drop in the magneto-static energy is observed when the interfaces/surfaces of the finite-layer nanobulk are modified.

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