Micro-Raman scattering and dielectric investigations of phase transition behavior in the BaTiO3–BaZrO3 system

摘要: In this study, the phase transition behavior of BaTiO3–BaZrO3 system was studied using micro-Raman scattering and dielectric measurement techniques. BaZrxTi1−xO3 ceramics were prepared for x=0.00, 0.05, 0.08, 0.15, 0.20, 1.00 compositions a solid-state reaction technique. A single-phase perovskite structure identified by x-ray diffraction The basic temperatures in these temperature range 70–575 K. tetragonal to cubic found decrease with increasing Zr content. orthorhombic that increases an initial increase content merges tetragonal–cubic x⩾0.15 compositions. Raman spectra rhombohedral phases could not be distinguished. Excellent agreement between crystallographic obtained both techniques suggested substituted octahedra uniformly distr...