Conservative antiphase boundary in SrTiO3films on LaAlO3substrates with SrRuO3buffer layers

J. S. Wu; C. L. Jia; K. Urban; Jianhua Hao; X. X. Xi

doi:10.1063/1.1367881

Conservative antiphase boundary in SrTiO₃films on LaAlO₃substrates with SrRuO₃buffer layers

J. S. Wu, C. L. Jia, K. Urban, Jianhua Hao, X. X. Xi

Research output: Journal article publication › Journal article › Academic research › peer-review

15 Citations (Scopus)

Abstract

We have studied the microstructure of SrTiO3films on LaAlO3substrates with the SrRuO3buffer layer using high-resolution transmission electron microscopy. While high density of defects due to lattice mismatch were found at the SrRuO3/LaAlO3interface, no misfit dislocation was observed at the SrTiO3/SrRuO3interface. The {111} stacking fault in the SrRuO3buffer layer propagates into the SrTiO3film, giving rise to a type of antiphase boundary on the {110} plane with a crystallographic shear vector of a/2{001}!!!!. The boundary is a conservative one which does not lead to any charge defects. A model based on dislocation interactions is proposed to explain the generation mechanism of the antiphase boundary.

Original language	English
Pages (from-to)	5653-5656
Number of pages	4
Journal	Journal of Applied Physics
Volume	89
Issue number	10
DOIs	https://doi.org/10.1063/1.1367881
Publication status	Published - 15 May 2001
Externally published	Yes

ASJC Scopus subject areas

General Physics and Astronomy
Physics and Astronomy (miscellaneous)

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10.1063/1.1367881

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abstract = "We have studied the microstructure of SrTiO3films on LaAlO3substrates with the SrRuO3buffer layer using high-resolution transmission electron microscopy. While high density of defects due to lattice mismatch were found at the SrRuO3/LaAlO3interface, no misfit dislocation was observed at the SrTiO3/SrRuO3interface. The {111} stacking fault in the SrRuO3buffer layer propagates into the SrTiO3film, giving rise to a type of antiphase boundary on the {110} plane with a crystallographic shear vector of a/2{001}!!!!. The boundary is a conservative one which does not lead to any charge defects. A model based on dislocation interactions is proposed to explain the generation mechanism of the antiphase boundary.",

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AU - Hao, Jianhua

AU - Xi, X. X.

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AB - We have studied the microstructure of SrTiO3films on LaAlO3substrates with the SrRuO3buffer layer using high-resolution transmission electron microscopy. While high density of defects due to lattice mismatch were found at the SrRuO3/LaAlO3interface, no misfit dislocation was observed at the SrTiO3/SrRuO3interface. The {111} stacking fault in the SrRuO3buffer layer propagates into the SrTiO3film, giving rise to a type of antiphase boundary on the {110} plane with a crystallographic shear vector of a/2{001}!!!!. The boundary is a conservative one which does not lead to any charge defects. A model based on dislocation interactions is proposed to explain the generation mechanism of the antiphase boundary.

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Conservative antiphase boundary in SrTiO₃films on LaAlO₃substrates with SrRuO₃buffer layers

Abstract

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