2000/10/31 by Naohisa Takesue, Yasuhiko Fujii, Hoydoo You · 2 citations
Engineering · Materials Science · Physics and Astronomy · #Ferroelectric and Piezoelectric Materials #Microwave Dielectric Ceramics Synthesis #Multiferroics and related materials #cond-mat.mtrl-sci
paper · pdf · doi:10.1103/physrevb.64.184112
11 pages, 3 figures
arxiv created 2001/09/13 · openalex publication_date 2001/10/22 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Ionic-pair equal-time displacement correlations in relaxor lead magnesium niobate, Pb(Mg1/3Nb2/3)O3, 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 30-80Å. 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.