Small angle resonant x-ray scattering measurements were performed for Pb(Mg1/3Nb2/3)O3 (PMN) at the Pb and Nb absorption edges using synchrotron radiation. The results are not consistent with the current model of segregated nano-domains and pose a serious question on the mechanism of the relaxor ferroelectric behavior in PMN. Combining with our earlier results of large angle resonant x-ray scattering measurements and the pulsed neutron scattering measurements on PMN, PZ and PZT, an alternative mechanism of the relaxor behavior is proposed.
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Egami et al. (1998) studied this question.
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