Field-variable magnetic domain characterization of individual 10 nm Fe3O4 nanoparticles

doi:10.1088/1674-1056/28/7/077504

中国物理B ›› 2019, Vol. 28 ›› Issue (7): 77504-077504.doi: 10.1088/1674-1056/28/7/077504

• CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES • 上一篇下一篇

Field-variable magnetic domain characterization of individual 10 nm Fe₃O₄ nanoparticles

Zheng-Hua Li(李正华), Xiang Li(李翔), Wei Lu(陆伟)

1 School of Physics and Materials Engineering, Dalian Minzu University, Dalian 116600, China;
2 School of Materials Science and Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China;
3 School of Materials Science and Engineering, Tongji University, Shanghai 200092, China

收稿日期:2019-01-25 修回日期:2019-05-05 出版日期:2019-07-05 发布日期:2019-07-05
通讯作者: Xiang Li E-mail:xiangli@usst.edu.cn
基金资助:
Project supported by the National Natural Science Foundation of China (Grant Nos. 61771092 and 51202146) and the Natural Science Foundation of Shanghai, China (Grant No. 17ZR1419700).

Field-variable magnetic domain characterization of individual 10 nm Fe₃O₄ nanoparticles

Zheng-Hua Li(李正华)¹, Xiang Li(李翔)², Wei Lu(陆伟)³

1 School of Physics and Materials Engineering, Dalian Minzu University, Dalian 116600, China;
2 School of Materials Science and Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China;
3 School of Materials Science and Engineering, Tongji University, Shanghai 200092, China

Received:2019-01-25 Revised:2019-05-05 Online:2019-07-05 Published:2019-07-05
Contact: Xiang Li E-mail:xiangli@usst.edu.cn
Supported by:
Project supported by the National Natural Science Foundation of China (Grant Nos. 61771092 and 51202146) and the Natural Science Foundation of Shanghai, China (Grant No. 17ZR1419700).

摘要/Abstract

摘要：

The local detection of magnetic domains of isolated 10 nm Fe₃O₄ magnetic nanoparticles (MNPs) has been achieved by field-variable magnetic force microscopy (MFM) with high spatial resolution. The domain configuration of an individual MNP shows a typical dipolar response. The magnetization reversal of MNP domains is governed by a coherent rotation mechanism, which is consistent with the theoretical results given by micromagnetic calculations. Present results suggest that the field-variable MFM has great potential in providing nanoscale magnetic information on magnetic nanostructures, such as nanoparticles, nanodots, skyrmions, and vortices, with high spatial resolution. This is crucial for the development and application of magnetic nanostructures and devices.

关键词: Fe₃O₄ nanoparticles, magnetic force microscopy, magnetic domain

Abstract:

Key words: Fe₃O₄ nanoparticles, magnetic force microscopy, magnetic domain

中图分类号: (Magnetic recording materials)

75.50.Ss

75.78.Cd (Micromagnetic simulations ?)

李正华, 李翔, 陆伟. Field-variable magnetic domain characterization of individual 10 nm Fe₃O₄ nanoparticles[J]. 中国物理B, 2019, 28(7): 77504-077504.

Zheng-Hua Li(李正华), Xiang Li(李翔), Wei Lu(陆伟). Field-variable magnetic domain characterization of individual 10 nm Fe₃O₄ nanoparticles[J]. Chin. Phys. B, 2019, 28(7): 77504-077504.

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Field-variable magnetic domain characterization of individual 10 nm Fe₃O₄ nanoparticles

Field-variable magnetic domain characterization of individual 10 nm Fe₃O₄ nanoparticles

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