Stair-rod dislocations in perovskite films on LaAlO3 substrates

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

doi:10.1080/09500830110043475

Stair-rod dislocations in perovskite films on LaAlO₃ substrates

J. S. Wu^*, C. L. Jia, K. Urban, J. H. Hao, X. X. Xi

^*Corresponding author for this work

Materials Science and Engineering

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

15 Scopus citations

Abstract

Two types of stair-rod dislocation formed at junctions of {111} stacking faults in SrTiO₃-SrRuo₃ two-layer films on LaAlO₃ substrates have been studied by high-resolution transmission electron microscopy. The first type, formed by the interaction of two stacking faults situated at the flat SrRuO₃-laAlO₃ interface without any step, has a Burgers vector (a/3)〈110〉. The other type, formed by the interaction of two stacking faults, of which one starts from the SrRuO₃-LaAlO₃ interface area involving an interface step, has a Burgers vector (a/3)〈120〉. The formation mechanism of the stair-rod dislocations and the effect of the step are discussed.

Original language	English (US)
Pages (from-to)	375-383
Number of pages	9
Journal	Philosophical Magazine Letters
Volume	81
Issue number	6
DOIs	https://doi.org/10.1080/09500830110043475
State	Published - Jun 2001

ASJC Scopus subject areas

Condensed Matter Physics

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title = "Stair-rod dislocations in perovskite films on LaAlO3 substrates",

abstract = "Two types of stair-rod dislocation formed at junctions of {111} stacking faults in SrTiO3-SrRuo3 two-layer films on LaAlO3 substrates have been studied by high-resolution transmission electron microscopy. The first type, formed by the interaction of two stacking faults situated at the flat SrRuO3-laAlO3 interface without any step, has a Burgers vector (a/3)〈110〉. The other type, formed by the interaction of two stacking faults, of which one starts from the SrRuO3-LaAlO3 interface area involving an interface step, has a Burgers vector (a/3)〈120〉. The formation mechanism of the stair-rod dislocations and the effect of the step are discussed.",

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T1 - Stair-rod dislocations in perovskite films on LaAlO3 substrates

AU - Wu, J. S.

AU - Jia, C. L.

AU - Urban, K.

AU - Hao, J. H.

AU - Xi, X. X.

PY - 2001/6

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N2 - Two types of stair-rod dislocation formed at junctions of {111} stacking faults in SrTiO3-SrRuo3 two-layer films on LaAlO3 substrates have been studied by high-resolution transmission electron microscopy. The first type, formed by the interaction of two stacking faults situated at the flat SrRuO3-laAlO3 interface without any step, has a Burgers vector (a/3)〈110〉. The other type, formed by the interaction of two stacking faults, of which one starts from the SrRuO3-LaAlO3 interface area involving an interface step, has a Burgers vector (a/3)〈120〉. The formation mechanism of the stair-rod dislocations and the effect of the step are discussed.

AB - Two types of stair-rod dislocation formed at junctions of {111} stacking faults in SrTiO3-SrRuo3 two-layer films on LaAlO3 substrates have been studied by high-resolution transmission electron microscopy. The first type, formed by the interaction of two stacking faults situated at the flat SrRuO3-laAlO3 interface without any step, has a Burgers vector (a/3)〈110〉. The other type, formed by the interaction of two stacking faults, of which one starts from the SrRuO3-LaAlO3 interface area involving an interface step, has a Burgers vector (a/3)〈120〉. The formation mechanism of the stair-rod dislocations and the effect of the step are discussed.

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Stair-rod dislocations in perovskite films on LaAlO₃ substrates

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