Microstructure and Electrical Conductivity of Epitaxial CaRuO3 Thin Films Prepared on (001), (110) and (111) SrTiO3 Substrates by Laser Ablation
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- ITO Akihiko
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University
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- MASUMOTO Hiroshi
- Institute for Materials Research, Tohoku University
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- GOTO Takashi
- Institute for Materials Research, Tohoku University
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Abstract
CaRuO3 (CRO) thin films were prepared on SrTiO3 (STO) single-crystal substrates by laser ablation, and their microstructures and the effect of lattice misfit on electrical conductivity were investigated. Pseudo-cubic (001), (110) and (111) oriented CRO thin films were grown epitaxially with the in-plane relationships on (001), (110) and (111) STO substrates at an oxygen pressure of 13 Pa and a substrate temperature of 973 K, respectively. Epitaxial (001) thin films showed a flat and smooth surface with a terrace and step structure whereas (110) CRO thin film had a faceted pyramid-like structure. The (111) CRO thin film had a rough terrace and step structure with trigonal texture. The lattice expansion of CRO would cause the decrease of the electrical conductivity. Epitaxial (111) CRO thin films has good lattice consistency with (111) STO substrate, and exhibited the highest electrical conductivity of 1.5×105 S·m-1 among the (001), (110) and (111) CRO thin films.<br>
Journal
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- Journal of the Ceramic Society of Japan
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Journal of the Ceramic Society of Japan 115 (1347), 683-687, 2007
The Ceramic Society of Japan
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Details 詳細情報について
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- CRID
- 1390282680260358144
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- NII Article ID
- 110006438667
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- NII Book ID
- AA12229489
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- COI
- 1:CAS:528:DC%2BD2sXhtlCisrjJ
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- ISSN
- 13486535
- 18820743
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- NDL BIB ID
- 9311298
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- Text Lang
- en
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed