Dislocations in SrTiO3thin films grown on LaAlO3substrates

Y. L. Qin, C. L. Jia, K. Urban, Jianhua Hao, X. X. Xi

Research output: Journal article publicationJournal articleAcademic researchpeer-review

24 Citations (Scopus)

Abstract

The dislocation configurations in SrTiO3thin films grown epitaxially on LaAlO3(100) substrates were studied by conventional and high-resolution transmission electron microscopy. Misfit dislocations had, in most cases, a Burgers vector a<100> and line directions of <010>. These dislocations constitute orthogonal arrays of parallel dislocations at the interface, relieving the lattice mismatch between SrTiO3and LaAlO3. Threading dislocations were found to be the major defects in the films. Two types of threading dislocations with the Burgers vectors a<100> and a<110> were identified. The relations of these threading dislocations with the misfit dislocations were investigated and are discussed in this paper.
Original languageEnglish
Pages (from-to)3117-3126
Number of pages10
JournalJournal of Materials Research
Volume17
Issue number12
DOIs
Publication statusPublished - 1 Jan 2002
Externally publishedYes

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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