In situ observation of magnetic vortex in amorphous and nanocrystalline ribbons

Shulan Zuo; Jiayi Huang; Ming Zhang; Ying Zhang; Baogen Shen

doi:10.1063/9.0000251

journal article·2022-03-01Open access

In situ observation of magnetic vortex in amorphous and nanocrystalline ribbons

Shulan Zuo, Jiayi Huang, Ming Zhang, Ying Zhang, Baogen Shen

AIP Advances· Volume 12· Issue 3

Publisher page Open full text

Source abstract

Abstract

In this study, the factors influencing the nucleation of magnetic vortices in CeFeB ribbons were studied using Lorentz transmission electron microscopy. Magnetic vortices and cross-tie walls exist in Ce14Fe80B6 amorphous ribbons. Via proper annealing, the amorphous ribbon is crystallized into a nanocrystalline structure whereby a magnetic vortex can exist in grains with sizes of approximately 30∼150 nm, indicating the formation of magnetic vortices is closely related to shape limitation. Moreover, it has been demonstrated magnetic vortices are the intrinsic magnetic domain structures in the amorphous alloys due to their weak magnetocrystalline anisotropy. This study provides a way to promote magnetic vortex formation in the nanocrystalline structure.

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Research context

Metals & alloys Nanomaterials Materials processing

OpenAlex topics: Magnetic properties of thin films · Metallic Glasses and Amorphous Alloys · Theoretical and Computational Physics

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

School of Materials Science and Engineering, Beihang University 1 , Beijing 100191, People’s Republic of China

School of Science, Inner Mongolia University of Science and Technology 2 , Baotou 014010, China

Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences 3 , Beijing 100190, People’s Republic of China

Funding

National Natural Science Foundation of China · Science Center of the National Science Foundation of China · National Key Research and Development Program of China · Key Program of the Chinese Academy of Sciences of China · Fujian Institute of Innovation, Chinese Academy of Sciences · Youth Innovation Promotion Association

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