Effect of Ba substitution on the microstructure and electrical conductivity of BaxCa1-xRuO3 thin films prepared by laser ablation

Akihiko Ito, Hiroshi Masumoto, Takashi Goto

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

BaxCa1-xRuO3 (BCRO) thin films were prepared by laser ablation on quartz substrates at a substrate temperature (Tsub) of 973 K and an oxygen pressure (Po2) of 13 Pa. The effect of Ba substitution on the microstructure and electrical conductivity (σ) was investigated. Rectangular-shaped CaRuO3 (CRO) island grains grew in BCRO thin films at a Ba fraction (x) below 0.1. BCRO thin films prepared at x > 0.2 consisted of fine grains. BCRO thin films at x > 0.2 showed metallic conduction, whereas those with an island structure at x < 0.1 showed semi-conducting behavior. The σ increased from 2.5 × 10 3 S·m-1 to 3.8 × 104 S·m-1 with increasing x from 0.1 to 1.0.

Original languageEnglish
Pages (from-to)1822-1825
Number of pages4
JournalMaterials Transactions
Volume49
Issue number8
DOIs
Publication statusPublished - 2008 Aug

Keywords

  • Barium ruthenate
  • Conductive oxide
  • Electrical conductivity
  • Laser ablation
  • Microstructure
  • Strontium ruthenate
  • Thin films

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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