Evolution of Structure of PbMg_(1/3)Nb_(2/3)O_3 in the Vicinity of the Burns Temperature

摘要

The probability density function (PDF) for the lead ion in PbMg _(1/3)Nb_(2/3)O_3 crystal was calculated in the frames of the spherical layer model, using earlier published experimental data. Temperature evolution of the radial part of the PDF ρ(R) is analyzed in the temperature region 293K