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Hematite Nano Cubes and the Prototypes of Their Self Assembly Investigated using Tem

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Abstract

Monodisperse hematite cubes about 30nm in size have been prepared by aging a refluxing acidified aqueous solution of FeCl3 in an open vessel. The as grown nano cubes were determined to be single crystalline hematite in perfect cubic shapes using transmission electron microscope and electron diffraction. The nano cube is one of the equilibrium shapes of hematite, which is resumed to be formed by preferential growth in certain crystallographic directions through the species diffusion in the aqueous solutions.

Some self-assembly prototypes have been observed, such as the short range ordered buildup consisting of several brick-like hematite nano cubes and the nano box consisted of square plates of hematite nanocrystals. The drive force for the formation of the above assemblies is assumed to be the unique magnetic feature of the single crystalline hematite nano cubes.

The perfect shape and the self-assembly feature give a possibility to fabricate bulk ceramics orderly assembled using hematite nano cubes.

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Authors and Affiliations

  1. National Laboratory of Super Hard Materials, Jilin University, Changchun, 130023, China

    San Yu, Shihai Kan, Guangtian Zou, Dongmei Li & Haiping Sun

  2. Department of Chemistry, Jilin University, Changchun, 130023, China

    Xiaogang Peng, Xingtong Zhang, Liangzhi Xiao & Tiejin Li

Authors
  1. San Yu
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  2. Shihai Kan
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  3. Guangtian Zou
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  4. Xiaogang Peng
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  5. Dongmei Li
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  6. Haiping Sun
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  7. Xingtong Zhang
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  8. Liangzhi Xiao
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  9. Tiejin Li
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Yu, S., Kan, S., Zou, G. et al. Hematite Nano Cubes and the Prototypes of Their Self Assembly Investigated using Tem. MRS Online Proceedings Library 432, 183–188 (1996). https://doi.org/10.1557/PROC-432-183

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  • DOI: https://doi.org/10.1557/PROC-432-183

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