Synthesis and electrical property of novel compound, KxCax/2Sn8-x/2O16 (x ≤ 2) with hollandite structure

M. Honda, J. Sakuma, K. Uheda, H. Takizawa, T. Endo, M. Shimada

Research output: Contribution to journalArticlepeer-review


A new tin oxide, KxCax/2Sn8-x/2O16(x ≤ 2) with the hollandite type structure was synthesized at 973 K ∼ 1473 K in air by a conventional ceramic process. Its structure was classified as monoclinic symmetry with the lattice parameters of a = 1.5006(1) nm, b = 0.32108(1) nm, c = 1.0608(1) nm and β = 134.954(6)°. The well-grown fibrous aggregation was observed in the melted K2CO3. Its electrical conductivity and activation energy were estimated to be about 2.2 × 10-9 Ω-1 · m-1 (room temperature) and 0.63 eV. Accordingly, the ionic conduction was substantially governed by the migration of ions from site to site in the tunnel.

Original languageEnglish
Pages (from-to)251-253
Number of pages3
JournalFuntai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy
Issue number3
Publication statusPublished - 2001 Mar


  • Flux growth
  • Hollandite structure
  • Ionic conduction
  • Tin oxide

ASJC Scopus subject areas

  • Mechanical Engineering
  • Industrial and Manufacturing Engineering
  • Metals and Alloys
  • Materials Chemistry

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