Reversal modes in arrays of interacting magnetic Ni nanowires: Monte Carlo simulations and scaling technique

TL;DR

This study uses Monte Carlo simulations and scaling techniques to explore how dipolar interactions influence magnetic reversal modes, coercivity, and remanence in arrays of Ni nanowires, revealing a maximum coercivity at intermediate densities.

Contribution

It introduces a combined Monte Carlo and scaling approach to analyze internal wire structures and reversal modes in interacting Ni nanowire arrays.

Findings

Coercivity and remanence depend strongly on wire spacing.

Maximum coercivity occurs at intermediate packing densities.

Different magnetization reversal modes are identified.

Abstract

The effect of dipolar interactions in hexagonal arrays of Ni nanowires has been investigated by means of Monte Carlo simulations combined with a scaling technique, which allows the investigation of the internal structure of the wires. A strong dependence of the coercivity and remanence on the distance between wires has been observed. At intermediate packing densities the coercivity exhibits a maximum, higher than the non-interacting value. This behavior, experimentally observed, has been explained on grounds of the interwire dipolar interactions. Also, different reversal modes of the magnetization have been identified.