Hydrothermal-controlled synthesis of hexagonal Co9S8 single crystal flake

Yuan Guang Zhang, Fan Guo, Song Ming Wan, Wei Wei Zheng

Research output: Contribution to journalArticlepeer-review


Hexagonal Co9S8 single crystal flake was synthesized in hydrazine hydrate (N2H4·H2O) solvent at 180°C for 72 h by hydrothermal method using cobalt sulfate hydrate (CoSO4·7H2O) and anhydrous sodium sulfate (Na2SO3) as the starting materials. The as-prepared Co9S8 samples were characterized by X-ray powder diffraction (XRD) transmission electron microscope (TEM) and vibrating sample magnetometer (VSM). The results show that the samples are mainly composed of hexagonal Co9S8 single crystal flakes with diameters of 0.8-1.5/Mm.The suitable reaction temperature and reaction time for growing Co9S8 single crystals is 180°C and 72h respectively. The saturation magnetization (Ms) and coercivity (Hc) values of the sample are 65 emu /g and 333 Oe under the room temperature respectively.

Original languageEnglish (US)
Pages (from-to)926-929
Number of pages4
JournalRengong Jingti Xuebao/Journal of Synthetic Crystals
Issue number6
StatePublished - Dec 2004
Externally publishedYes


  • CoS
  • Crystal
  • Hydrothermal method

ASJC Scopus subject areas

  • Ceramics and Composites
  • Condensed Matter Physics
  • Materials Chemistry


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