Structure of WO3 ultrafine particles and their characteristic solid states

Mami Kurumada, Osamu Kido, Takeshi Sato, Hitoshi Suzuki, Yuki Kimura, Katsuya Kamitsuji, Yoshio Saito, Chihiro Kaito

Research output: Contribution to journalConference articlepeer-review

13 Citations (Scopus)


WO3 nanoparticles from 10 to 250 nm in diameter were formed by burning tungsten wire in low-oxygen-partial-pressure atmosphere in Ar gas. The structure of the 10-nm-order particle was cubic WO3, and for the particle larger than 50 nm, the structure was triclinic WO3. The color of the produced samples changed from blue to yellowish green and yellow depending on the particle size. It was also shown that the present particle is a good transmittance material for mid-IR light with wavelength between 5 and 20 μm. The growth of huge particles by coalescence growth in smoke has been discussed.

Original languageEnglish
Pages (from-to)e1673-e1678
JournalJournal of Crystal Growth
Issue number1-2
Publication statusPublished - 2005 Feb 15


  • A1. Nanostructures
  • A2. Growth from vapor
  • B1. Nanomaterials
  • B1. Oxides

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Inorganic Chemistry
  • Materials Chemistry


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