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    Direct observation of dynamical magnetization reversal process governed by shape anisotropy in single NiFe2O4 nanowire

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    Type
    Article
    Authors
    Zhang, Junli
    Zhu, Shimeng
    Li, Hongli
    Zhu, Liu
    Hu, Yang
    Xia, Weixing
    Zhang, Xixiang cc
    Peng, Yong
    Fu, Jiecai
    KAUST Department
    Material Science and Engineering Program
    Physical Science and Engineering (PSE) Division
    Date
    2018
    Permanent link to this record
    http://hdl.handle.net/10754/630405
    
    Metadata
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    Abstract
    Discovering how the magnetization reversal process is governed by the magnetic anisotropy in magnetic nanomaterials is essential and significant to understand the magnetic behaviour of micro-magnetics and to facilitate the design of magnetic nanostructures for diverse technological applications. In this study, we present a direct observation of a dynamical magnetization reversal process in single NiFe2O4 nanowire, thus clearly revealing the domination of shape anisotropy on its magnetic behaviour. Individual nanoparticles on the NiFe2O4 nanowire appear as single domain states in the remanence state, which is maintained until the magnetic field reaches 200 Oe. The magnetization reversal mechanism of the nanowire is observed to be a curling rotation mode. These observations are further verified by micromagnetic computational simulations. Our findings show that the modulation of shape anisotropy is an efficient way to tune the magnetic behaviours of cubic spinel nano-ferrites.
    Citation
    Zhang J, Zhu S, Li H, Zhu L, Hu Y, et al. (2018) Direct observation of dynamical magnetization reversal process governed by shape anisotropy in single NiFe2O4 nanowire. Nanoscale 10: 10123–10129. Available: http://dx.doi.org/10.1039/c8nr01393d.
    Sponsors
    This study was supported by National Natural Science Foundation of China (11604130, 51601082, 51571104 and 51771085), the Fundamental Research Funds for the Central Universities (lzujbky-2015-304 and lzujbky-2015-305) and Open Project of Key Laboratory of Magnetism and Magnetic Materials of the Ministry of Education, Lanzhou University (LZUMMM2018013).
    Publisher
    Royal Society of Chemistry (RSC)
    Journal
    Nanoscale
    DOI
    10.1039/c8nr01393d
    Additional Links
    http://pubs.rsc.org/en/Content/ArticleLanding/2018/NR/C8NR01393D
    ae974a485f413a2113503eed53cd6c53
    10.1039/c8nr01393d
    Scopus Count
    Collections
    Articles; Physical Science and Engineering (PSE) Division; Material Science and Engineering Program

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