Preparation of TiO2 nanoparticles by pulsed laser ablation: Ambient pressure dependence of crystallization

Masakazu Matsubara, Tetsuya Yamaki, Hisayoshi Itoh, Hiroaki Abe, Keisuke Asai

Research output: Contribution to journalLetter

22 Citations (Scopus)

Abstract

Pulsed laser ablation (PLA) with a KrF excimer laser was used to prepare fine particles of titanium dioxide (TiO2). The ablation in an atmosphere of Ar and O2 (5:5) at total pressures of ≥1 Torr led to the formation of TiO2 nanoparticles composed of anatase and rutile structures without any suboxides. The weight fraction of the rutile/anatase crystalline phases was dependent on the pressure of the Ar/O2 gas. The TiO2 nanoparticles had a spherical shape and their size, ranging from 10 and 14 nm, also appeared to be dependent on the ambient pressure.

Original languageEnglish
Pages (from-to)L479-L481
JournalJapanese Journal of Applied Physics, Part 2: Letters
Volume42
Issue number5 A
Publication statusPublished - 2003 May 1

Keywords

  • Crystallization
  • Nanoparticle deposition
  • Nanoparticles
  • Pulsed laser ablation
  • Titanium dioxide (TiO)

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy (miscellaneous)
  • Physics and Astronomy(all)

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