Skyrmions in CeFeB Amorphous Nanodisks

TL;DR

This paper investigates the formation and stability of Neel skyrmions in CeFeB amorphous nanodisks, demonstrating their spontaneous nucleation and stability at room temperature, which could have implications for magnetic storage technologies.

Contribution

It introduces the study of skyrmions in CeFeB nanodisks and shows their spontaneous formation and stability at room temperature, a novel finding in this material system.

Findings

Neel skyrmions can be spontaneously nucleated in CeFeB nanodisks.

Skyrmions remain stable at room temperature.

Finite temperature effects influence skyrmion behavior.

Abstract

Rare earth Fe B permanent magnets are usually used because of their excellent magnetic performance at room temperature. The high price of these elements pushes some researchers to find new alternatives. From rare earth elements cerium (Ce) is considered as the most abundant and cheap, therefore, the interest was focused to study the properties of alloys based on this element in recent years. In this work, we investigate the magnetization behavior of CeFeB nanodisks in presence of Dzyaloshinskii Moriya interaction. We show that topological structures, Neel skyrmions, in particular, could be nucleated spontaneously in this kind of system. We also study skyrmions behavior in the presence of finite temperature. We demonstrate that CeFeB nanodisks could host magnetic skyrmions at room temperature.