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Home  >  Journal list  >  Journal of the Ceramic Society of Japan  >  Vol.117  No.1364 (April) (2009)  >  pp.426-430

Journal of the Ceramic Society of Japan
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Epitaxial growth of BaRuO3 thin films on MgO substrates by laser ablation

Akihiko ITO1), Hiroshi MASUMOTO2), Takashi GOTO3) and Shunichi SATO1)
1) Institute of Multidisciplinary Research for Advanced Materials, Tohoku University
2) Center for Interdisciplinary Research, Tohoku University
3) Institute for Materials Research, Tohoku University

  Epitaxial BaRuO3 (BRO) thin films were prepared on (001) and (111) MgO substrates by laser ablation, and the relationship of lattice matching, morphology and electrical conductivity was investigated. (205)- and (001)-oriented rhombohedral BRO thin films were epitaxially grown on (001) and (111) MgO substrates, respectively. The (205) BRO thin films showed an orthogonal texture with faceted island grains, whereas the (001) BRO thin films had a hexagonal columnar structure with a flat terrace. Epitaxial BRO thin films showed metallic conduction, and the (205) BRO thin films exhibited the highest electrical conductivity, i.e., 1.0 × 105 S·m-1, at room temperature. A higher lattice matching between epitaxial thin film and the substrate yielded a higher electrical conductivity.

Laser ablation, Barium ruthenate, Thin films, Epitaxial growth, Microstructure, Electrical conductivity

Received: November 10, 2008
Accepted: January 15, 2009 , Published online: April 01, 2009
Copyright (c) 2009 The Ceramic Society of Japan



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