Structure refinement for tantalum nitrides nanocrystals with various morphologies

Lianyun Liu, Kai Huang, Jungang Hou, Hongmin Zhu

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

Tantalum nitrides (TaN x) nanocrystals with different phase and morphology have been synthesized through homogenous sodium reduction under low temperature with the subsequent annealing process under high vacuum. The crystal structures of tantalum nitrides were determined by Rietveld refinement based on the X-ray diffraction data. The morphologies of various tantalum nitrides nanocrystals in high quality were analyzed through the electron microcopies examinations. The spherical TaN nanoparticles, cuboidal TaN 0.83 and TaN 0.5 nanocrystals have been selectively prepared at different annealing temperatures. In addition, the specific surface areas of the tantalum nitrides nanocrystals measured by BET method were around 9.87-11.64 m 2 g -1, indicating that such nano-sized tantalum nitrides could be suitable for capacitor with high specific capacitance.

Original languageEnglish
Pages (from-to)1630-1635
Number of pages6
JournalMaterials Research Bulletin
Volume47
Issue number7
DOIs
Publication statusPublished - 2012 Jul 1
Externally publishedYes

Keywords

  • A. Nanostructures
  • A. Nitrides
  • C. X-ray diffraction
  • D. Crystal structure

ASJC Scopus subject areas

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

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