Figure 4
Experimental and model diffuse scattering intensity distribution of PMN-PT in (a) hk0 and (b) hkk planes. For the reconstruction of the experimental patterns selected symmetry elements of the crystal were applied. Diffuse spots with non-integer Miller indices visible in the hkk plane point towards correlated Mg/Nb disorder, where nearest neighbours tend to be of a different type, thus locally resembling the NaCl structure. Constant background is added to facilitate the comparison.  [article HTML]

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