Remagnetization in the array of ferromagnetic nanowires with periodic and quasiperiodic order

TL;DR

This study explores how the arrangement and interactions of permalloy nanowires in periodic and quasiperiodic structures affect their magnetization reversal and hysteresis behavior, combining experimental and theoretical approaches.

Contribution

It demonstrates the influence of quasiperiodic order and inter-ribbon spacing on hysteresis features and dipolar interactions in nanowire arrays.

Findings

Dipolar interactions can be tuned by adjusting ribbon spacing.

Quasiperiodic order introduces additional switching steps.

Shape anisotropies significantly affect hysteresis loops.

Abstract

We investigate experimentally and theoretically the magnetization reversal process in one-dimensional magnonic structures composed of permalloy nanowires of the two different widths and finite length arranged in a periodic and quasiperiodic order. The main features of the hysteresis loop are determined by different shape anisotropies of the component elements and the dipolar interactions between them. We showed, that the dipolar interactions between nanowires forming a ribbon can be controlled by change a distance between the neighboring ribbons. The quasiperiodic order can influence the hysteresis loop by introduction additional tiny switching steps when the dipolar interactions are sufficiently strong.