Morphology of epitaxially grown BaRuO3 and CaRuO3 thin films by laser ablation

Akihiko Ito, Hiroshi Masumoto, Takashi Goto

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

Epitaxial BaRuO3 (BRO) and CaRuO3 (CRO) thin films were prepared on (001), (110) and (111) SrTiO3 (STO) single-crystal substrates by laser ablation, and their microstructures and anisotropy of electrical conductivity were investigated. The (205) (104), (110) and (009) oriented BRO thin films, and (001), (110) and (110) oriented CRO thin films were grown epitaxially on (001), (110) and (111) STO substrates with in-plain orientation, respectively. The (009) BRO thin film and (001) CRO thin film has a flat surface result from a good lattice matching to STO substrates. The (205) (104) BRO thin film and (111) CRO thin film exhibited orthogonal- and hexagonal-shaped texture, respectively, The (110) BRO thin film and (110) CRO thin film showed an island growth due to (110) surface feature of cubic perovskite structure. Epitaxial BRO and CRO thin films have a high electrical conductivity with a metallic conduction, the (111) CRO thin films exhibited the highest conductivity of 1.4×105 Sm-1.

Original languageEnglish
Pages (from-to)315-318
Number of pages4
JournalKey Engineering Materials
Volume352
DOIs
Publication statusPublished - 2007 Jan 1

Keywords

  • Barium ruthenate
  • Calcium ruthenate
  • Epitaxial growth
  • Laser ablation
  • Morphology

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

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