Diffuse scattering in relaxor ferroelectrics: true three-dimensional mapping, experimental artefacts and modelling

Bosak, A.; Chernyshov, D.; Vakhrushev, S.; Krisch, M.

doi:10.1107/S0108767311040281

Figure 3
Comparison of (a) experimental (PMN-PT) and model isosurfaces of diffuse scattering intensity in the proximity of different Bragg nodes. (b) Denotes the axially symmetric pancake model by Xu, Zhong et al. (2004

) with parameters given by Cervellino et al. (2011b

), (c) refers to its modification following Cervellino et al. (2011b

) with the same parameters, (d) corresponds to the modified pancake (`baguette') model of Cervellino et al. (2011b

) and (e) stands for the model of the present paper. Isosurface values were chosen in order to keep the spatial extent of objects within the range of ca ±0.1-0.2 r.l.u.