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precipitates in laser-ablated manganite films
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View: Figures


Image of FIG. 1.
FIG. 1.

(a) AFM image of a film grown on , showing precipitates ( in diameter) on the flat surface of . (b) AFM image of a precipitate-free film. (c) High resolution ADF image of the epitaxial interface between and , and (d) lower magnification image of the film around the precipitate, both taken along the [100] zone axis of the substrate. A brighter region (cap) on top of the precipitate was observed. (e) ADF image aligned to the cap boxed in (d). (f) Perovskite crystal structure observed in the area marked by the box in (e). (g) EELS spectra recorded at the filled points in (d). Four representative spectra were chosen from the substrate, the film, the precipitate, and the cap, respectively. (h) Concentration profiles of La and Mn along the line scan in (d).

Image of FIG. 2.
FIG. 2.

(a) O and (b) Mn EELS near edge structure after background subtraction and normalization. Reference data for from Ref. 7 are also plotted for comparison, where the energy offsets were added to match the leading edge positions to those of the precipitate, in order to correct for the difference between the measurement systems. Inset in (b) shows the Mn peak positions of the cap and the film.

Image of FIG. 3.
FIG. 3.

(a) ADF image of the film aligned to a segment of the precipitate. (b) CBED pattern obtained from the precipitate. (c) High resolution lattice image and (d) Fourier transformation of the image taken from the precipitate. (e) Crystal structure of in a (100)-projection (Ref. 12).


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Mn3O4 precipitates in laser-ablated manganite films