English, Article edition: DISLOCATION DENSITY IN SrTiO3 FILM GROWN ON DyScO3 BY PULSE LASER ABLATION Z. Y. ZHAI; X. Z. LI; S. S. ZHI; ...

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Physical Description
  • article
Language
  • English

Edition details

Title
  • DISLOCATION DENSITY IN SrTiO3 FILM GROWN ON DyScO3 BY PULSE LASER ABLATION
Author
  • Z. Y. ZHAI
  • X. Z. LI
  • S. S. ZHI
  • X. S. WU
  • J. H. HAO
  • J. GAO
Physical Description
  • article
Notes
  • SrTiO3 films are fabricated on DyScO3 substrates by pulse laser deposition. In situ X-ray diffraction (XRD) is used to characterize the thermal expansion coefficient at low temperature. The abnormal behavior in lattice parameter at 80 K may be the hint of a phase transition. High resolution XRD is performed to detect the two kinds of dislocations, i.e. screw and edge. Results show that the density of edge dislocation is a little larger than that of the screw one. The total dislocation density has the order of about 108 cm-2. Edge dislocation density decreases with the increase of the film thickness. We argue that the ratio between these two dislocation densities results in the growth mode of the film.
  • RePEc:wsi:srlxxx:v:14:y:2007:i:04:p:779-782
Language
  • English
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