• DocumentCode
    71632
  • Title

    Threading dislocations in La0.67Sr0.33MnO3/SrTiO3 superlattice

  • Author

    Ming He ; Long Lin ; Hualong Tao ; Minghui Qiu ; Binyan Zou ; Zhihua Zhang

  • Author_Institution
    Dept. of Phys., Dalian Jiaotong Univ., Dalian, China
  • Volume
    8
  • Issue
    9
  • fYear
    2013
  • fDate
    Sep-13
  • Firstpage
    512
  • Lastpage
    514
  • Abstract
    Transmission electron microscopy-related experiments were performed on a La0.67Sr0.33MnO3/SrTiO3 superlattice. The predominant defects in the superlattice are a high density of threading dislocations (TDs) perpendicular or quasi-perpendicular to the substrate surface. The TDs are mostly pure-edge-type with Burgers vectors b = 〈100〉 or 〈110〉. A few TDs of screw character with Burgers vectors ± [001] were also found. Electron energy loss spectra show that non-stoichiometry is accommodated in the near-interface region of the superlattice. The stronger crystal field induced by defect and non-stoichiometry are accounted for by the observed macroscopic properties.
  • Keywords
    crystal field interactions; dislocations; electron energy loss spectra; lanthanum compounds; strontium compounds; superlattices; transmission electron microscopy; Burgers vectors; La0.67Sr0.33MnO3-SrTiO3; crystal field; density; electron energy loss spectra; nonstoichiometry; predominant defects; superlattice; threading dislocations; transmission electron microscopy;
  • fLanguage
    English
  • Journal_Title
    Micro & Nano Letters, IET
  • Publisher
    iet
  • ISSN
    1750-0443
  • Type

    jour

  • DOI
    10.1049/mnl.2013.0411
  • Filename
    6649651
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=71632