X-Ray Diffuse Scattering Study on Ionic-Pair Displacement Correlations in Relaxor Lead Magnesium Niobate

Naohisa Takesue; Yasuhiko Fujii; Hoydoo You

doi:10.1103/PhysRevB.64.184112

X-Ray Diffuse Scattering Study on Ionic-Pair Displacement Correlations in Relaxor Lead Magnesium Niobate

Materials Science 2009-10-31 v2

Authors: Naohisa Takesue , Yasuhiko Fujii , Hoydoo You

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Abstract

Ionic-pair equal-time displacement correlations in relaxor lead magnesium niobate, $Pb(Mg_{1/3}Nb_{2/3})O_{3}$ , have been investigated at room temperature in terms of an x-ray diffuse scattering technique. Functions of the distinct correlations have been determined quantitatively. The results show the significantly strong rhombohedral-polar correlations regarding Pb-O, Mg/Nb-O, and O-O' pairs. Their spatial distribution forms an ellipse or a sphere with the radii of 30-80 $\AA$ . This observation of local structure in the system proves precursory presence of the polar microregions in the paraelectric state which leads to the dielectric dispersion.

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radiation damage in silicon phase transitions

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@article{arxiv.cond-mat/0010271,
  title  = {X-Ray Diffuse Scattering Study on Ionic-Pair Displacement Correlations in Relaxor Lead Magnesium Niobate},
  author = {Naohisa Takesue and Yasuhiko Fujii and Hoydoo You},
  journal= {arXiv preprint arXiv:cond-mat/0010271},
  year   = {2009}
}

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11 pages, 3 figures

X-Ray Diffuse Scattering Study on Ionic-Pair Displacement Correlations in Relaxor Lead Magnesium Niobate

Abstract

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