Closed-cage (fullerene-like) structures of NiBr2

M. Bar-Sadan, R. Popovitz-Biro, Yehiam Prior, R. Tenne

Research output: Contribution to journalArticlepeer-review

19 Scopus citations


It is well accepted by now that nanoparticles of inorganic layered compounds form closed-cage structures (IF). In particular closed-cage nanoparticles of metal dihalides, like NiCl2, CdCl2 and CdI2 were shown to produce such structures in the past. In the present report IF-NiBr2 polyhedra and quasi-spherical structures were obtained by the evaporation/recrystallization technique as well as by laser ablation. When the nanoclusters were formed in humid atmosphere, nickel perbromate hydrate [Ni(BrO4)2(H2O)6] polyhedra and short tubules were produced, as a result of a reaction with water. Nanooctahedra of NiBr2 were found occasionally in the irradiated soot. The reoccurrence of this structure in the IF family suggests that it is a generic one. Consistent with previous observations, this study showed that formation of the IF materials stabilized the material under the electron-beam irradiation. The growth mechanism of these nanostructures is briefly discussed.

Original languageEnglish
Pages (from-to)2137-2146
Number of pages10
JournalMaterials Research Bulletin
Issue number11
StatePublished - 9 Nov 2006
Externally publishedYes


  • A. Fullerenes
  • A. Halides
  • A. Inorganic compounds
  • A. Nanostructures

ASJC Scopus subject areas

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


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