Work

Topological magnetic defects in a strong permanent magnet Nd2Fe14B

Year: 2024

Type: article

Abstract: Skyrmions, highly mobile and manipulable magnetic objects, have garnered significant interest for their potential applications in modern magnetic device technology. However, their formation has been limited to a small number of materials due to the delicate balance of magnetic energies involved. In this study, we report the irreversible formation of skyrmions in Nd 2 Fe 14 B, a rare-earth permanent magnet characterized by large magnetic anisotropy . Remarkably, these magnetic topological defects exist over a wide range of temperatures and magnetic fields (295–565 K and 0–0.1 T) due to the high Curie temperature and significant magnetic anisotropy of Nd 2 Fe 14 B. Our findings not only unveil a new material where skyrmions can form but also open up possibilities for exploring topological defects in various magnetic systems, including strong hard magnets.

Source: Materials Today Quantum

DOI: 10.1016/j.mtquan.2024.100017

Authors: Juyoung Jeong, Yongwoo Lee, Shi-Zeng Lin, Yoon Hee Jeong, Hye Jung Chang, Jeehoon Kim

Institutions: Pohang University of Science and Technology, Los Alamos National Laboratory, Korea Institute of Science and Technology, Korea University of Science and Technology

Language: English

Topic: Magnetic properties of thin films

Subfield: Atomic and Molecular Physics, and Optics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $2,700

Funder: Ministry of Education