Octahedral tilt propagation controlled by a-site cation size at perovskite oxide heterointerfaces

Ryotaro Aso; Daisuke Kan; Yuichi Shimakawa; Hiroki Kurata

doi:10.1021/cg500285m

Octahedral tilt propagation controlled by a-site cation size at perovskite oxide heterointerfaces

Ryotaro Aso, Daisuke Kan, Yuichi Shimakawa, Hiroki Kurata

Research output: Contribution to journal › Article › peer-review

42 Citations (Scopus)

Abstract

A clear correlation between the A-site cation size and the octahedral tilt propagation from the substrates into the ATiO₃ (A = Ba²⁺, Sr²⁺, Sr²⁺_0.7Ca²⁺_0.3, and Sr²⁺_0.5Ca²⁺_0.5) epitaxial thin films was found from the observations of ATiO₃/GdScO₃ heterostructures using high-resolution annular bright-field scanning transmission electron microscopy. The in-plane oxygen displacements at the interface increase with decreasing the A-site cation size and facilitate the TiO₆ octahedral tilt propagation across the interface. The results highlight the significance of the A-site cation size as a controlling factor for structural distortions at oxide-based heterointerfaces.

Original language	English
Pages (from-to)	2128-2132
Number of pages	5
Journal	Crystal Growth and Design
Volume	14
Issue number	5
DOIs	https://doi.org/10.1021/cg500285m
Publication status	Published - May 7 2014
Externally published	Yes

All Science Journal Classification (ASJC) codes

Chemistry(all)
Materials Science(all)
Condensed Matter Physics

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10.1021/cg500285m

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abstract = "A clear correlation between the A-site cation size and the octahedral tilt propagation from the substrates into the ATiO3 (A = Ba2+, Sr2+, Sr2+0.7Ca2+0.3, and Sr2+0.5Ca2+0.5) epitaxial thin films was found from the observations of ATiO3/GdScO3 heterostructures using high-resolution annular bright-field scanning transmission electron microscopy. The in-plane oxygen displacements at the interface increase with decreasing the A-site cation size and facilitate the TiO6 octahedral tilt propagation across the interface. The results highlight the significance of the A-site cation size as a controlling factor for structural distortions at oxide-based heterointerfaces.",

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AU - Aso, Ryotaro

AU - Kan, Daisuke

AU - Shimakawa, Yuichi

AU - Kurata, Hiroki

PY - 2014/5/7

Y1 - 2014/5/7

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AB - A clear correlation between the A-site cation size and the octahedral tilt propagation from the substrates into the ATiO3 (A = Ba2+, Sr2+, Sr2+0.7Ca2+0.3, and Sr2+0.5Ca2+0.5) epitaxial thin films was found from the observations of ATiO3/GdScO3 heterostructures using high-resolution annular bright-field scanning transmission electron microscopy. The in-plane oxygen displacements at the interface increase with decreasing the A-site cation size and facilitate the TiO6 octahedral tilt propagation across the interface. The results highlight the significance of the A-site cation size as a controlling factor for structural distortions at oxide-based heterointerfaces.

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Octahedral tilt propagation controlled by a-site cation size at perovskite oxide heterointerfaces

Abstract

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