A perfect conical nanoshape meets large magnetocrystalline anisotropy: unusual magnetic configurations

Magnetic configurations play a paramount role in determining magnetic reversal and unusual configurations and therefore could lead to novel magnetic behaviors and new applications. Here, we demonstrate that the unusual magnetic configurations can be adjusted via the synergy of a perfect conical shap...

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Bibliographic Details
Published in:Journal of materials chemistry. C, Materials for optical and electronic devices Materials for optical and electronic devices, 2023-07, Vol.11 (28), p.9552-9558
Main Authors: Jiang, Jianzhuang, Wang, Wentao, Fu, Xiaochan, Wang, Xinyan, Hu, Yuhui, He, Kaizhou, Wang, Xiangqian, Ni, Xia
Format: Article
Language:English
Subjects:
Cobalt
Configurations
Magnetic anisotropy
Nanowires
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Summary:Magnetic configurations play a paramount role in determining magnetic reversal and unusual configurations and therefore could lead to novel magnetic behaviors and new applications. Here, we demonstrate that the unusual magnetic configurations can be adjusted via the synergy of a perfect conical shape and large magnetocrystalline anisotropy. The near-perfect conical shape with a progressively diminishing size is achieved via depositing cobalt in the ion-tracking template. The magnetocrystalline anisotropy is then modulated by tailoring the crystalline texture. The first-order-reversal-curve analysis discloses that the magnetic configurations of cobalt nanocones are distinctive from cobalt nanowires. Because of the conical shape and large magnetocrystalline anisotropy, the magnetic anisotropy and exchange interaction change from the tip and the base, yielding exceptional switching field distributions. The unusual magnetic configurations are modulated in cobalt nanocones with a near-perfect conical shape and large magnetocrystalline anisotropy.
ISSN:2050-7526
2050-7534
DOI:10.1039/d3tc01051a