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}},
}
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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. 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B. and Tybell, T.},\nTitle = {{Surface stability of epitaxial La0.7Sr0.3MnO3 thin films on\n (111)-oriented SrTiO3}},\nJournal = {{JOURNAL OF APPLIED PHYSICS}},\nYear = {{2013}},\nVolume = {{113}},\nNumber = {{18}},\nMonth = {{MAY 14}},\nAbstract = {{We report on the stability of the La0.7Sr0.3MnO3 thin film surface when\n deposited on (111)-oriented SrTiO3. For ultrathin La0.7Sr0.3MnO3 films,\n an initial 3-dimensional morphology is observed, which becomes\n 2-dimensional with increasing film thickness. For even thicker samples,\n we show that the surface morphology evolves from 2-dimensional to\n 3-dimensional and that this observation is consistent with an\n Asaro-Tiller-Grinfeld instability, which can be controlled by the\n deposition temperature. This allows for synthesis of films with\n step-and-terrace surfaces over a wide range of thicknesses. 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