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Interfacial intermixing in Sr R u O 3 / P r 0.7 C a 0.3 M n O 3 epitaxial superlattices: A HAADF ‐ STEM study
Author(s) -
Hillebrand Reinald,
Pippel Eckhard,
Vrejoiu Ionela,
Hesse Dietrich
Publication year - 2014
Publication title -
physica status solidi (a)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.532
H-Index - 104
eISSN - 1862-6319
pISSN - 1862-6300
DOI - 10.1002/pssa.201329332
Subject(s) - superlattice , annealing (glass) , materials science , crystallography , epitaxy , thermal stability , analytical chemistry (journal) , x ray crystallography , chemistry , diffraction , nanotechnology , optics , physics , optoelectronics , organic chemistry , composite material , layer (electronics) , chromatography
We quantitatively interpret HAADF‐STEM images of SrRuO 3 /Pr 0.7 Ca 0.3 MnO 3 (SRO/PCMO) superlattices. The images were taken in a probe‐corrected ( c s = 0) FEI microscope at 300 kV. The specimen thickness is estimated by comparing experimental and simulated Z ‐contrast ratios. The intermixing at the interfaces is different for the growth of SRO on PCMO and that of PCMO on SRO. In addition, the thermal stability of SRO/PCMO superlattices is studied by HAADF‐STEM, based on a series of annealing experiments. Colored HAADF‐STEM image ( V = 300 kV, c s = 0 mm) of part of a SrRuO 3 /Pr 0.7 Ca 0.3 MnO 3 epitaxial superlattice.