Fractal growth of single-crystal α-Fe2O3: From dendritic micro-pines to hexagonal micro-snowflakes

Kai He, Cheng Yan Xu, Liang Zhen*, Wen Zhu Shao

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

45 Scopus citations

Abstract

The fractal nanostructures of single-crystal α-Fe2O3 with micro-pine and micro-snowflake like morphologies have been synthesized via a hydrothermal route. The crystallinity, composition, purity, morphology and microstructure of the synthesized hematite were characterized by X-ray diffraction, Mössbauer spectrometry, scanning electron microscopy (SEM), transmission electron microscopy (TEM) and high-resolution transmission electron microscopy (HRTEM). A possible growth mechanism for these two kinds of fractal structures was proposed based on careful SEM and TEM observations. The role of the surfactant NP-9 in the conversion of the two kinds of fractal structures was discussed.

Original languageEnglish (US)
Pages (from-to)739-742
Number of pages4
JournalMaterials Letters
Volume62
Issue number4-5
DOIs
StatePublished - Feb 29 2008

Keywords

  • Crystal growth
  • Fractal
  • Magnetic materials
  • Nanomaterials

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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