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Direct Observation of Dynamical Magnetization Reversal Process Governed by Shape Anisotropy in Single NiFe2O4 Nanowire

Abstract

Discovering the magnetization reversal process how to be governed by magnetic anisotropy in magnetic nanomaterials is essential and significant to understand the magnetic behaviours of micro-magnetics and facilitate the designation of magnetic nanostructures for diverse technological applications. In this work, we present a direct observation of dynamical magnetization reversal process of a single NiFe2O4 nanowire, clearly revealing the domination of shape anisotropy on its magnetic behavior. Besides, individual nanoparticles on the single NiFe2O4 nanowire appear single domain state, which is maintained during the whole magnetization process. The magnetization reversal mechanism of the whole nanowire is observed to be coherent rotation mode. These observations are further verified by micromagnetic computational simulations. Our finding shows the modulation of shape anisotropy is an effective way to tune the magnetic behaviours of cubic spinel nano-ferrites.

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Publication details

The article was received on 16 Feb 2018, accepted on 04 May 2018 and first published on 04 May 2018


Article type: Paper
DOI: 10.1039/C8NR01393D
Citation: Nanoscale, 2018, Accepted Manuscript
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    Direct Observation of Dynamical Magnetization Reversal Process Governed by Shape Anisotropy in Single NiFe2O4 Nanowire

    J. Zhang, S. Zhu, H. Li, L. Zhu, Y. Hu, W. Xia, X. Zhang, Y. Peng and J. Fu, Nanoscale, 2018, Accepted Manuscript , DOI: 10.1039/C8NR01393D

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