Surface stability of epitaxial La0.7Sr0.3MnO3 thin films on (111)-oriented SrTiO3. Hallsteinsen, I., Boschker, J. E., Nord, M., Lee, S., Rzchowski, M., Vullum, P. E., Grepstad, J. K., Holmestad, R., Eom, C. B., & Tybell, T. JOURNAL OF APPLIED PHYSICS, MAY 14, 2013.
doi  abstract   bibtex   
We report on the stability of the La0.7Sr0.3MnO3 thin film surface when deposited on (111)-oriented SrTiO3. For ultrathin La0.7Sr0.3MnO3 films, an initial 3-dimensional morphology is observed, which becomes 2-dimensional with increasing film thickness. For even thicker samples, we show that the surface morphology evolves from 2-dimensional to 3-dimensional and that this observation is consistent with an Asaro-Tiller-Grinfeld instability, which can be controlled by the deposition temperature. This allows for synthesis of films with step-and-terrace surfaces over a wide range of thicknesses. Structural characterization by x-ray diffraction and transmission electron microscopy shows that the films are strained to the SrTiO3 substrate and reveals the presence of an elongated out-of-plane lattice parameter at the interface with SrTiO3. (C) 2013 AIP Publishing LLC.
@article{ ISI:000319294100020,
Author = {Hallsteinsen, I. and Boschker, J. E. and Nord, M. and Lee, S. and
   Rzchowski, M. and Vullum, P. E. and Grepstad, J. K. and Holmestad, R.
   and Eom, C. B. and Tybell, T.},
Title = {{Surface stability of epitaxial La0.7Sr0.3MnO3 thin films on
   (111)-oriented SrTiO3}},
Journal = {{JOURNAL OF APPLIED PHYSICS}},
Year = {{2013}},
Volume = {{113}},
Number = {{18}},
Month = {{MAY 14}},
Abstract = {{We report on the stability of the La0.7Sr0.3MnO3 thin film surface when
   deposited on (111)-oriented SrTiO3. For ultrathin La0.7Sr0.3MnO3 films,
   an initial 3-dimensional morphology is observed, which becomes
   2-dimensional with increasing film thickness. For even thicker samples,
   we show that the surface morphology evolves from 2-dimensional to
   3-dimensional and that this observation is consistent with an
   Asaro-Tiller-Grinfeld instability, which can be controlled by the
   deposition temperature. This allows for synthesis of films with
   step-and-terrace surfaces over a wide range of thicknesses. Structural
   characterization by x-ray diffraction and transmission electron
   microscopy shows that the films are strained to the SrTiO3 substrate and
   reveals the presence of an elongated out-of-plane lattice parameter at
   the interface with SrTiO3. (C) 2013 AIP Publishing LLC.}},
DOI = {{10.1063/1.4804312}},
Article-Number = {{183512}},
ISSN = {{0021-8979}},
ResearcherID-Numbers = {{Eom, Chang-Beom/I-5567-2014
   Tybell, Thomas/B-8297-2013
   Boschker, Jos/L-6517-2018
   Lee, Sanghan/C-8876-2012
   }},
ORCID-Numbers = {{Tybell, Thomas/0000-0003-0787-8476
   Boschker, Jos/0000-0001-9122-2079
   Lee, Sanghan/0000-0002-5807-864X
   Nord, Magnus/0000-0001-7981-5293
   Holmestad, Randi/0000-0002-4274-5794}},
Unique-ID = {{ISI:000319294100020}},
}

Downloads: 0