Crystal structure and dielectric properties of Pb1–xSrx(Yb1/2Nb1/2)O3 system

The crystal structure and dielectric properties of Pb1–xSrx(Yb12Nb12)O3 (PSYN) system have been investigated by X-ray diffraction and dielectric measurement. The Curie temperature (Tc) of the solid solution does not change noticeably with the Sr content. At the same time, the maximum dielectric constant value gradually decreases with the increasing Sr concentration, and then finally the dielectric curve profile with respect to temperature becomes nearly flat. From the X-ray intensity studies of superlattices lines, it is deduced that Sr+2 ions hinder the antiparallel displacement of Pb+2 ions but their addition does not significantly affect the B-site ordering in Pb(Yb12Nb12)O3.