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 publicationJournal articleAcademic researchpeer-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 languageEnglish
Pages (from-to)5653-5656
Number of pages4
JournalJournal of Applied Physics
Volume89
Issue number10
DOIs
Publication statusPublished - 15 May 2001
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Physics and Astronomy (miscellaneous)

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