Structural control and combinatorial doping of titanium dioxide thin films by laser molecular beam epitaxy

Y. Matsumoto, M. Murakami, T. Hasegawa, T. Fukumura, M. Kawasaki, P. Ahmet, K. Nakajima, T. Chikyow, H. Koinuma

Research output: Contribution to journalArticle

48 Citations (Scopus)

Abstract

Structural control of titanium dioxide, TiO 2 , thin films was achieved by the selection of appropriate substrates. The rutile phase of the TiO 2 thin film was grown on α-Al 2 O 3 (0 0 0 1) substrate, while the anatase phase was on SrTiO 3 (0 0 1) and LaAlO 3 (0 0 1) substrates. The crystallinity of the anatase films has been much improved by the use of the LaAlO 3 (0 0 1) substrate. The combinatorial doping with 3d transition metals in the TiO 2 thin films was carried out for the rutile and anatase films in much shorter time than the conventional one-by-one process, leading to the discovery of transparent ferromagnetism in the Co-doped anatase film.

Original languageEnglish
Pages (from-to)344-348
Number of pages5
JournalApplied Surface Science
Volume189
Issue number3-4
DOIs
Publication statusPublished - 2002 Apr 28
Externally publishedYes

Keywords

  • Combinatorial chemistry
  • Laser MBE and scanning SQUID microscope
  • Magnetism
  • Oxide
  • Thin film
  • TiO
  • Transition metal

ASJC Scopus subject areas

  • Chemistry(all)
  • Condensed Matter Physics
  • Physics and Astronomy(all)
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films

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