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HomeKey Engineering MaterialsKey Engineering Materials Vols. 645-646Growth and Magnetic Properties of...

Growth and Magnetic Properties of Three-Dimensional Firtree-Like Cobalt Microcrystals with Hierarchical Dendritic Superstructures

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Abstract:

Novel ordered three-dimensional (3D) firtree-like hexagonal cobalt microcrystals with hierarchical dendritic superstructures have been obtained by using cobalt bis (4-pyridine carboxylate) tetrahydrate as the precursor of Co. The 3D dendrite has a main axis and the leaves arrange layer by layer in parallel along the axis, which exhibit the radiate hexagonal arrangement from the axis in a layer. The main axis of the dendrite grows along the [001] direction of hexagonal Co and the leaves grow parallel to the (001) plane. The hysteresis loop of the sample shows a ferromagnetic behavior with the saturation magnetization of 134.0 emu/g and the coercivity of 184.9 Oe. It is noted that the coercivity is relatively low compared with that of the cobalt dendritic crystallites reported previously, which may result from the lower total morphology anisotropy of our sample.

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Micro-Nano Technology XVI

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Periodical:

Key Engineering Materials (Volumes 645-646)

Pages:

104-109

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.645-646.104

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Online since:

May 2015

Authors:

Xi Yang*, Zhi Bing Fu, Lei Yuan, Chao Yang Wang, Qian Wang Chen

Keywords:

Chemical Synthesis, Crystal Growth, Magnetic Materials

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* - Corresponding Author

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