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![[Figure 5]](rw5055fig5mag.jpg)
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Figure 5
Reciprocal-space maps of a BFO film on LSAO, with diffraction intensities in logarithmic scale as indicated on the scale bar. The data were collected at the SSRF, X-ray wavelength λ = 1.2398 Å. There are four phases coexisting in the film, as shown in (a) and described in the text. (a) (002) HL mapping of Tri-1 phase. Spots 1 and 2 are weaker, as the mapping was penetrating between the 1a and 1b, 2a and 2b pairs of this phase. So are the spots I and II of the Tri-2 phase. (b) (03) HL mapping. The spots are even weaker than in (a) as they are further apart from each other. As a result, the position of spot 2 is estimated in the figure. The (013) RSM shows similar spots as here (mapping not shown). (c) (002) HK mapping, L = 2.017, Tri-1 phase. There are eight twinning variants with a fourfold symmetry. There is a similar pattern for the twins of the Tri-2 phase (L = 1.795, not shown). (d) AFM topograph of the film with the phases indicated. The flat area corresponds to the T-like, Mc phase. The stripe-like region corresponds to the tilted rhombohedral-like phase and tilted tetragonal-like phase, i.e. a mixture of Tri-1 phase and Tri-2 phase, which is similar to the phases in the BFO film on LAO reported by Chen, Prosandeev et al. (2011  ). The bulk R-like phase may be hiding in some gaps between the tilted phases. |
![[Figure 5]](rw5055fig5.jpg)
 | JOURNAL OF APPLIED CRYSTALLOGRAPHY |
ISSN: 1600-5767
