Observation of Various and Spontaneous Magnetic Skyrmionic Bubbles at Room-Temperature in a Frustrated Kagome Magnet with Uniaxial Magnetic Anisotropy

TL;DR

This study reports the first observation of various spontaneous magnetic skyrmionic bubbles at room temperature in a frustrated kagome magnet, highlighting its potential for skyrmion-based spintronic applications.

Contribution

It demonstrates the existence and dynamic behavior of magnetic skyrmionic bubbles in Fe3Sn2 at room temperature, a novel finding in frustrated kagome magnets.

Findings

Magnetic skyrmionic bubbles are observed spontaneously at room temperature.

Transformation between magnetic bubbles involves Bloch line motion.

Fe3Sn2 enables magnetic control of topological spin textures.

Abstract

Various and spontaneous magnetic skyrmionic bubbles are experimentally observed for the first time, at room temperature in a frustrated kagome magnet Fe3Sn2 with unixial magnetic anisotropy. The magnetization dynamics were investigated using in-situ Lorentz transmission electron microscopy, revealing that the transformation between different magnetic bubbles and domains are via the motion of Bloch lines driven by applied external magnetic field. The results demonstrate that Fe3Sn2 facilitates a unique magnetic control of topological spin textures at room temperature, making it a promising candidate for further skyrmion-based spintronic devices.